Air valve noise control method for automobile seat air bag massage

Abstract

The invention relates to the technical field of air bag inflation regulation and control, in particular to an air valve noise control method for automobile seat air bag massage, which comprises the following steps: firstly, according to the air pressure change difference of different air bags during inflation, judging the boosting difficulty of different positions, namely the inflation boosting hindering degree; the main air pump intervention degree is determined on the basis of the main air pump intervention demand represented by the deviation of the air pressure in the trend prediction, so that the main air pump adjustment power obtained by combining the inflation pressure increasing obstruction degree and the main air pump intervention degree is more accurate; in addition, when the air pressure of the adjacent massage air bags is relatively large or the pressure borne by the adjacent massage air bags is relatively large, inflation can be carried out in an auxiliary mode by opening the air pressure valves between the adjacent massage air bags, and the opening degree of the valves is further determined in real time; therefore, the effect of inflating the massage air bag of the automobile seat by combining the main air pump to adjust the power and the real-time opening degree of the valve is better.

Description

Technical Field

[0001] The present invention relates to the technical field of airbag inflation regulation, and particularly to a method for controlling the noise of air valves for airbag massage of automotive seats. Background Art

[0002] The noise generated during the inflation of airbags in automotive massage seats may affect the user's comfort. Especially when used in a quiet environment or at night, it may interfere with rest and even cause irritability. Prolonged exposure may reduce the product experience and lead to user resistance. Considering that when the main air pump has a large power, although the inflation duration will be reduced, a large amount of noise will be generated; while when the main air pump has a small power, although the noise will be reduced, the duration of the noise will be longer due to the longer inflation time. To solve this problem, the prior art usually conducts a mechanical analysis on the magnitude of the force exerted at different positions of different massage airbag positions when the user is sitting and leaning, so as to measure the boosting difficulty of each massage airbag, and adaptively determine the power of the main air pump according to the boosting difficulty, so as to achieve the purpose of reducing the inflation duration while reducing the noise as much as possible. However, due to the high difficulty in collecting mechanical data and the lack of intuitive reflection of mechanical data on the boosting difficulty, the measurement accuracy of the boosting difficulty of each massage airbag is usually low, resulting in poor inflation effect when inflating according to the power of the main air pump determined by the boosting difficulty. Summary of the Invention

[0003] In order to solve the technical problem that the accuracy of the boosting difficulty obtained by mechanical analysis in the prior art is low, resulting in poor inflation effect when inflating according to the power of the main air pump determined by the boosting difficulty, the purpose of this application is to provide a method for controlling the noise of air valves for airbag massage of automotive seats. The specific technical solutions adopted are as follows: The first aspect of this application provides a method for controlling the noise of air valves for airbag massage of automotive seats, including: Obtaining the air pressure time-sequence curve of each massage airbag of the automotive seat within a preset time period after starting inflation by the main air pump; taking each other massage airbag adjacent to each air pressure valve corresponding to each massage airbag as the adjacent airbag of the corresponding air pressure valve; Determining the inflation boosting hindrance degree of each massage airbag according to the slope time-sequence attenuation situation of the air pressure time-sequence curve; determining the main air pump intervention degree of each massage airbag according to the prediction deviation situation of local air pressure changes on the air pressure time-sequence curve; determining the adjusted power of the main air pump according to the inflation boosting hindrance degree and the main air pump intervention degree; Determining the valve opening degree of the air pressure valve corresponding to the current moment according to the deviation situation of the inflation boosting hindrance degree between each massage airbag and the adjacent airbag and the real-time air pressure deviation situation; and continuing to inflate the massage airbag of the automotive seat according to the adjusted power of the main air pump and the valve opening degree.

[0004] Further, the process of obtaining the degree of inflation and pressure boost obstruction includes: Obtain the characteristic points in the air pressure time series curve through the Douglas-Peucker algorithm; connect each characteristic point in chronological order to obtain each analysis line segment; take the analysis line segment with a slope less than the preset slope threshold as the characteristic line segment; determine the attenuation ratio according to the ratio between the number of characteristic line segments and the number of analysis line segments; determine the corresponding obstruction rate according to the chronological distribution of the slope attenuation of each analysis line segment; determine the degree of inflation and pressure boost obstruction of each massage airbag according to the product between the obstruction rate and the attenuation ratio.

[0005] Further, the process of obtaining the obstruction rate includes: Take the difference between the slope of each analysis line segment and the slope of the next analysis line segment as the slope attenuation value of each analysis line segment; perform a negative correlation mapping on the time length between the first moment of the analysis line segment with the largest slope attenuation value and the starting moment to determine the obstruction rate.

[0006] Further, the process of obtaining the degree of main air pump intervention includes: On the air pressure time series curve, take all the moments after the first moment of the analysis line segment with the smallest slope as the reference moments; determine the predicted air pressure difference of each reference moment according to the law of air pressure attenuation before each reference moment; maximize the difference between the predicted air pressure difference of each reference moment and the predicted air pressure difference of the previous reference moment to determine the predicted air pressure attenuation value; Take the sum value between the air pressure value of each reference moment and the predicted air pressure attenuation value as the corresponding air pressure prediction value; on the air pressure time series curve, take the moment with the air pressure value equal to the air pressure prediction value of each reference moment as the comparison moment of each reference moment; take the minimum value of the time interval between each reference moment and all comparison moments as the predicted duration deviation value of each reference moment; Determine the reference intervention degree of each reference moment according to the product between the predicted air pressure attenuation value of each reference moment and the predicted duration deviation value; determine the degree of main air pump intervention of each massage airbag according to the normalized value of the mean of the reference intervention degrees of all reference moments.

[0007] Further, the process of obtaining the predicted air pressure difference includes: Take the difference between the air pressure value of each reference moment and the air pressure value of the previous moment as the reference air pressure difference of each reference moment; arrange all the reference air pressure differences before each reference moment in chronological order to obtain the air pressure difference sequence of each reference moment; determine the corresponding predicted air pressure difference through an autoregressive model according to the air pressure difference sequence.

[0008] Further, the process of obtaining the adjusted power of the main air pump includes: Determine the degree of power adjustment according to the degree of inflation pressure increase obstruction and the degree of intervention of the main air pump; determine the adjusted power of the main air pump according to the product of the degree of power adjustment and the preset prior main air pump power.

[0009] Further, the process of obtaining the degree of power adjustment includes: Perform a positive correlation mapping on the product of the degree of inflation pressure increase obstruction and the degree of intervention of the main air pump to determine the degree of power adjustment.

[0010] Further, the process of obtaining the valve opening degree includes: Successively take each massage airbag as the target airbag; take the air pressure valve between the target airbag and each corresponding adjacent airbag as the reference valve; Determine the valve adjustment weight of the target airbag on the reference valve at the current moment according to the deviation of the degree of inflation pressure increase obstruction and the real-time deviation of the air pressure value between each adjacent airbag and the target airbag; determine the valve opening degree of the reference valve corresponding to the target airbag at the current moment according to the valve adjustment weight.

[0011] Further, the process of obtaining the valve adjustment weight includes: Maximize the difference between the degree of inflation pressure increase obstruction of each adjacent airbag and the degree of inflation pressure increase obstruction of the target airbag to determine the pressure increase obstruction deviation value of the target airbag on the reference valve; maximize the difference between the air pressure value of each adjacent airbag and the air pressure value of the target airbag at the current moment to determine the corresponding air pressure inverse difference value; determine the valve adjustment weight according to the sum value of the pressure increase obstruction deviation value and the air pressure inverse difference value.

[0012] Further, the process of continuing to inflate the massage airbags of the vehicle seat according to the adjusted power of the main air pump and the valve opening degree includes: After adjusting the power of the main air pump for inflating each massage airbag to the adjusted power of the main air pump, adjust the air pressure valve of each massage airbag in real time according to the valve opening degree until the air pressure value of the corresponding massage airbag reaches the inflation requirement.

[0013] In a second aspect, the present application provides an air valve noise control system for airbag massage of a vehicle seat, and the system includes: A data acquisition and preprocessing module, configured to obtain the air pressure time series curve of each massage airbag of the vehicle seat within a preset time period after starting inflation by the main air pump; take each other massage airbag adjacent to each massage airbag through each air pressure valve as the adjacent airbag corresponding to each air pressure valve; The main air pump power determination module is used to determine the inflation and pressure boost obstruction degree of each massage airbag according to the slope time sequence attenuation condition of the air pressure time sequence curve; determine the main air pump intervention degree of each massage airbag according to the predicted deviation condition of the local air pressure change on the air pressure time sequence curve; and determine the adjusted power of the main air pump according to the inflation and pressure boost obstruction degree and the main air pump intervention degree. The massage airbag inflation module is used to determine the valve opening degree of the air pressure valve corresponding to the current moment according to the deviation condition of the inflation and pressure boost obstruction degree between each massage airbag and the adjacent airbag and the real-time air pressure deviation condition; and continue to inflate the massage airbags of the vehicle seat according to the adjusted power of the main air pump and the valve opening degree.

[0014] In a third aspect, the present application provides a computer device, including a memory and a processor. The memory is used to store computer program code, and the processor is used to call and run the computer program code from the memory to execute the method as described in the first aspect or any embodiment of the first aspect of the present application.

[0015] In a fourth aspect, the present application provides a computer program product, which includes computer program code. When the computer program code is executed, it is used to execute the method as described in the first aspect or any embodiment of the first aspect of the present application.

[0016] In a fifth aspect, the present application provides a computer-readable storage medium, which stores computer program code. When the computer program code is executed, it is used to execute the method as described in the first aspect or any embodiment of the first aspect of the present application.

[0017] The present application has the following beneficial effects: The present application first judges the boost difficulty, that is, the inflation and pressure boost obstruction degree, of different positions according to the air pressure change differences of different airbags during inflation; and determines the main air pump intervention degree based on the main air pump intervention requirements characterized by the deviation in trend prediction of the air pressure, so that the adjusted power of the main air pump obtained by combining the inflation and pressure boost obstruction degree and the main air pump intervention degree is more accurate; in addition, the present application also considers that when the air pressure of the adjacent massage airbag is relatively large or the pressure received is relatively large, the air pressure valve between the adjacent massage airbags can be opened to assist in inflation, and further determines the real-time valve opening degree; thus, the effect of inflating the massage airbags of the vehicle seat by combining the adjusted power of the main air pump and the real-time valve opening degree is better. Description of the Drawings

[0018] To more clearly illustrate the technical solutions and advantages in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0019] Figure 1 Flowchart of a method for controlling air valve noise for airbag massage of automotive seats provided by an embodiment of the present invention; Figure 2 Structural diagram of a system for controlling air valve noise for airbag massage of automotive seats provided by an embodiment of the present invention; Figure 3 Schematic structural diagram of a computer device provided by an embodiment of the present invention. Detailed implementation manners

[0020] To further elaborate on the technical means and effects adopted by the present invention to achieve the intended invention purpose, the following, in combination with the accompanying drawings and preferred embodiments, details the specific implementation manners, structures, features, and effects of a method for controlling air valve noise for airbag massage of automotive seats proposed according to the present invention. In the following description, different "one embodiment" or "another embodiment" do not necessarily refer to the same embodiment, and the specific features, structures, or characteristics in one or more embodiments can be combined in any suitable form. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as implying or suggesting relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of these features.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs.

[0022] The following specifically describes in conjunction with the drawings the specific solution of a method for controlling air valve noise for airbag massage of automotive seats provided by the present invention.

[0023] An embodiment of the present application provides a method for controlling air valve noise for airbag massage of automotive seats. Please refer to Figure 1 , which shows a flowchart of a method for controlling air valve noise for airbag massage of automotive seats provided by an embodiment of the present invention. The method includes: Step S101: Obtain the air pressure time - series curve of each massage airbag of the automotive seat within a preset time period after starting to inflate through the main air pump; use each other massage airbag adjacent to each air pressure valve corresponding to each massage airbag as the adjacent airbag of the corresponding air pressure valve.

[0024] In a specific implementation manner of the embodiment of the present invention, a pressure sensor is arranged at the inner center position of each massage airbag of the vehicle seat, and the air pressure value of each massage airbag at each moment is collected in real time by the pressure sensor; all the air pressure values of each massage airbag within a preset time period after starting to inflate through the main air pump are arranged in chronological order and then curve-fitted to obtain an air pressure time sequence curve; wherein, the preset time period is set to 1 minute, and the sampling frequency is set to collect once per second, and can be adjusted according to the specific implementation environment. It should be noted that in the embodiment of the present invention, the power of the main air pump during inflation within the preset time period is set to the preset prior main air pump power, and the calculation of the power adjustment of the main air pump and the real-time calculation of the inflation boost hindrance degree in the subsequent process are both performed after the end of the preset time period; wherein, the preset prior main air pump power is set to half of the maximum power of the main air pump, and can be adjusted according to the specific implementation environment.

[0025] Considering that when inflating one of the massage airbags, the inflation can be assisted by the gas in the adjacent airbag by opening the air pressure valve connecting the adjacent airbags; therefore, first determine the adjacent airbags adjacent to each massage airbag under each air pressure valve.

[0026] Step S102: Determine the inflation boost hindrance degree of each massage airbag according to the slope time sequence attenuation of the air pressure time sequence curve; determine the main air pump intervention degree of each massage airbag according to the prediction deviation of the local air pressure change on the air pressure time sequence curve; determine the power adjustment of the main air pump according to the inflation boost hindrance degree and the main air pump intervention degree.

[0027] When the main air pump inflates the airbag, the main air pump keeps a certain power unchanged. When different pressures are applied to the airbag by the user, it will cause the internal pressure rise of the airbag to be hindered to different degrees. The greater the pressure applied by the user, the more difficult it is for the pressure of the airbag to reach the established requirement, and the slower the air pressure rising speed in the airbag is during inflation. Thus, the inflation boost hindrance degree can be analyzed through the slope time sequence attenuation of the air pressure time sequence curve of a single massage airbag during the inflation process.

[0028] Preferably, in some possible implementation manners of the embodiment of the present invention, the process of obtaining the inflation boost hindrance degree includes: Obtain the feature points in the air pressure time series curve through the Douglas-Peucker algorithm; connect each feature point in chronological order to obtain each analysis segment; take the analysis segment with a slope less than the preset slope threshold as the feature segment; determine the attenuation ratio according to the ratio between the number of feature segments and the number of analysis segments; determine the corresponding obstruction rate according to the chronological distribution of the slope attenuation of each analysis segment; wherein, the process of obtaining the obstruction rate includes: taking the difference between the slope of each analysis segment and the slope of the next analysis segment as the slope attenuation value of each analysis segment; performing a negative correlation mapping on the time length between the first moment of the analysis segment with the largest slope attenuation value and the starting moment to determine the obstruction rate. In a specific implementation manner of the embodiment of the present invention, the preset slope threshold is set to 0.5 and can be adjusted according to the specific implementation environment; it should be noted that the Douglas-Peucker algorithm is a well-known technical means for those skilled in the art and will not be further elaborated herein.

[0029] First, under normal inflation conditions, the air pressure rising rate is usually large. When a relatively large pressure is applied to the massage airbag, as the inflation process progresses, the air pressure rising rate will become slower and slower; therefore, in the air pressure time series curve, the more the number of analysis segments less than the preset slope threshold, that is, the feature segments, the more significant the feature that the air pressure rising rate becomes slower, and the greater the pressure applied to the corresponding massage airbag, that is, the greater the inflation obstruction degree; in addition, the slope attenuation value characterizes the degree of slope attenuation in chronological order. The earlier the analysis segment with the largest slope attenuation value appears, it indicates that the sudden drop in the air pressure rising rate occurs earlier, indicating that the external force has a greater impact and causes the air pressure rising rate to be inhibited prematurely, and the corresponding inflation obstruction degree is also greater; therefore, when the obstruction rate is greater and the attenuation ratio is greater, the inflation and pressure boosting obstruction degree should be greater. Further, determine the inflation and pressure boosting obstruction degree of each massage airbag according to the product of the obstruction rate and the attenuation ratio, so that when the pressure received by the massage airbag is greater, the obtained inflation and pressure boosting obstruction degree is greater.

[0030] In a specific implementation manner of the embodiment of the present invention, the process of obtaining the inflation and pressure boosting obstruction degree includes: ; wherein, is the inflation and pressure boosting obstruction degree of the th massage airbag; is the time length between the first moment of the analysis segment with the largest slope attenuation value on the air pressure time series curve of the th massage airbag and the starting moment; is the linear normalization function; is the obstruction rate of the th massage airbag; is the number of feature segments on the air pressure time series curve of the th massage airbag; is the number of analysis line segments on the air pressure time sequence curve of the th massage airbag; is the attenuation ratio of the th massage airbag.

[0031] Under the action of pressure, the change of air pressure will be inhibited, resulting in the change of air pressure in chronological order deviating from the predicted trend. Moreover, the greater the deviation between the predicted value and the actual air pressure value, the more serious the inhibition of the inflation process under the action of pressure. Then, the main air pump needs to perform more intense intervention to improve the inflation efficiency.

[0032] Preferably, in some possible implementation manners of the embodiments of the present invention, the process of obtaining the intervention degree of the main air pump includes: On the air pressure time sequence curve, all the moments after the first moment of the analysis line segment with the smallest slope are used as reference moments; according to the attenuation law of the air pressure value before each reference moment, the predicted air pressure difference of each reference moment is determined; the maximum value is obtained based on the difference between the predicted air pressure difference of each reference moment and the predicted air pressure difference of the previous reference moment, and the predicted air pressure attenuation value is determined. Among them, the process of obtaining the predicted air pressure difference includes: taking the difference between the air pressure value of each reference moment and the air pressure value of the previous moment as the reference air pressure difference of each reference moment; arranging all the reference air pressure differences before each reference moment in chronological order to obtain the air pressure difference sequence of each reference moment; and determining the corresponding predicted air pressure difference according to the air pressure difference sequence through an autoregressive model. It should be noted that the autoregressive model is a well-known technical means for those skilled in the art and will not be further elaborated here.

[0033] For each reference moment, when the relative attenuation degree of its corresponding predicted air pressure difference is greater, that is, when the predicted air pressure attenuation value is greater, it indicates that the change of air pressure is slower in chronological order, and the attenuation of the actual air pressure value growth trend under the action of pressure is more serious. At this time, a greater power of the main air pump is required for intervention, and the corresponding intervention degree of the main air pump should be greater; therefore, the predicted air pressure attenuation value is positively correlated with the intervention degree of the main air pump. In addition, analyzing with the moments after the first moment of the analysis line segment with the smallest slope as reference moments can ensure that the analyzed time range belongs to the time period with a more significant attenuation of the inflation speed, thereby more accurately characterizing the intervention degree of the main air pump.

[0034] The sum value between the air pressure value at each reference time and the predicted air pressure attenuation value is used as the corresponding predicted air pressure value; on the air pressure time series curve, the time when the air pressure value equal to the predicted air pressure value at each reference time is used as the comparison time for each reference time; the minimum value of the time interval between each reference time and all comparison times is used as the predicted duration deviation value for each reference time. When the degree of relative attenuation of the predicted air pressure difference is greater, the occurrence time of the corresponding predicted air pressure value will be affected by the trend and be more lagged. The longer the lag time, the greater the degree of attenuation; therefore, when the minimum value of the time interval between the reference time and all comparison times is larger, the time when the predicted air pressure value appears in the time series is more lagged, and the attenuation of the growth trend of the corresponding air pressure value is more serious. Therefore, a larger main air pump power is required for intervention; that is, the corresponding predicted duration deviation value is positively correlated with the main air pump intervention degree. It should be noted that when there is no comparison time equal to the corresponding predicted air pressure value on the air pressure time series curve, the corresponding comparison time is determined by interpolation method in combination with the air pressure time series curve; the interpolation method is a well-known technical means in the art and will not be further limited and described here.

[0035] Since the larger the predicted air pressure attenuation value and the larger the predicted duration deviation value, the larger the main air pump power required for intervention, therefore, further combining all reference times, according to the product between the predicted air pressure attenuation value and the predicted duration deviation value at each reference time, the reference intervention degree at each reference time is determined; according to the normalized value of the mean of the reference intervention degrees at all reference times, the main air pump intervention degree of each massage air bag is determined. The larger the main air pump intervention degree, the greater the power requirement of the main air pump.

[0036] In a specific implementation manner of the embodiment of the present invention, the acquisition process of the main air pump intervention degree is represented by the formula: ; where is the main air pump intervention degree of the th massage air bag; is the number of reference times on the air pressure time series curve of the th massage air bag; is the difference between the predicted air pressure difference at the th reference time and the predicted air pressure difference at the previous reference time on the air pressure time series curve of the th massage air bag; is the maximum value of the differences between the predicted air pressure differences at each reference time and the predicted air pressure differences at their respective previous reference times on the air pressure time series curve of the th massage air bag; is the predicted air pressure attenuation value at the th reference time on the air pressure time series curve of the th massage air bag; is the reference intervention degree at the th reference moment on the air pressure time sequence curve of the th massage airbag; is a linear normalization function; it should be noted that the difference represents the absolute value of the difference.

[0037] Preferably, in some possible implementation manners of the embodiments of the present invention, the obtaining process of the main air pump adjustment power includes: the greater the degree of hindrance to inflation and pressure boost, the stronger the hindrance effect on inflation, and thus the greater the power of the main air pump required for inflation; and the intervention degree of the main air pump characterizes the power demand for the main air pump. Therefore, further determine the power adjustment degree according to the degree of hindrance to inflation and pressure boost and the intervention degree of the main air pump; then, taking the power adjustment degree as the adjustment weight, determine the main air pump adjustment power according to the product of the power adjustment degree and the preset prior main air pump power. Preferably, in some possible implementation manners of the embodiments of the present invention, perform a positive correlation mapping on the product between the degree of hindrance to inflation and pressure boost and the intervention degree of the main air pump to determine the power adjustment degree; where the obtaining process of the main air pump adjustment power is expressed in the formula as: ; where is the main air pump adjustment power of the th massage airbag; is the preset prior main air pump power; is the intervention degree of the main air pump of the th massage airbag; is the degree of hindrance to inflation and pressure boost of the th massage airbag; is the power adjustment degree of the th massage airbag; when the main air pump adjustment power is set to half of the maximum power of the main air pump, after performing positive correlation mapping through the corresponding method, the value of the main air pump adjustment power can be made not to exceed the maximum power of the main air pump. After determining the main air pump adjustment power, inflate the corresponding massage airbag with the main air pump adjustment power during the subsequent inflation process.

[0038] Step S103: Determine the valve opening degree of the air pressure valve corresponding to the current moment according to the deviation of the degree of hindrance to inflation and pressure boost between each massage airbag and the adjacent airbag and the real-time air pressure deviation; continue to inflate the massage airbag of the vehicle seat according to the main air pump adjustment power and the valve opening degree.

[0039] When inflating one of the massage air bags, if the gas pressure and the pressure received by the adjacent air bag adjacent to the air pressure valve are relatively large, the air pressure valve can be opened to assist in inflating the massage air bag, thereby reducing the use time of the main air pump to a certain extent and indirectly reducing the noise caused by the long-term opening of the main air pump; Therefore, further analyze the adjacent air bags adjacent to the air pressure valve of each massage air bag to determine the opening degree of the air pressure valve.

[0040] Preferably, in some possible implementation manners of the embodiments of the present invention, the process of obtaining the valve opening degree includes: Successively take each massage air bag as the target air bag; take the air pressure valve between the target air bag and each corresponding adjacent air bag as the reference valve; determine the valve adjustment weight of the target air bag on the reference valve at the current moment according to the deviation of the inflation and pressure increase hindrance degree and the real-time deviation of the air pressure value between each adjacent air bag and the target air bag; wherein, the process of obtaining the valve adjustment weight includes: maximize the difference between the inflation and pressure increase hindrance degree of each adjacent air bag and the inflation and pressure increase hindrance degree of the target air bag to determine the pressure increase hindrance deviation value of the target air bag on the reference valve; according to the current moment, maximize the difference between the air pressure value of each adjacent air bag and the air pressure value of the target air bag to determine the corresponding air pressure inverse difference value; determine the valve adjustment weight according to the sum value between the pressure increase hindrance deviation value and the air pressure inverse difference value.

[0041] For the adjacent air bag adjacent to the target air bag, the greater its corresponding pressure increase hindrance degree relative to the pressure increase hindrance degree of the target air bag indicates that the pressure it receives is relatively greater, then the greater the role of inflating the target air bag when the valve is opened, and the greater the opening of the valve should be; in addition, the greater the air pressure value of the adjacent air bag relative to the air pressure value of the target air bag, the stronger the tendency of the gas in the adjacent air bag to rush into the target air bag, and the greater the valve opening should be at this time. Therefore, the greater the pressure increase hindrance deviation value and the air pressure inverse difference value, the greater the valve adjustment weight.

[0042] Further, determine the opening degree of the reference valve corresponding to the target airbag at the current moment according to the valve adjustment weight. In a specific implementation manner of the embodiment of the present invention, when the valve adjustment weight is less than or equal to 0, the reference valve is not opened; when the valve adjustment weight is greater than 0, the normalized value of the valve adjustment weight is used as the opening degree of the reference valve corresponding to the target airbag at the current moment. When the valve adjustment weight is less than or equal to 0, it indicates that the pressure reverse difference and gas reverse difference of the adjacent airbag may not be sufficient to support the gas of the adjacent airbag to enter the target airbag. To avoid the gas of the target airbag passing through the reference valve into the adjacent airbag, the valve of the reference valve is closed at this time. When the valve adjustment weight is greater than 0, the greater the valve adjustment weight, the more significant the trend of the gas of the adjacent airbag entering the target airbag, so the greater the opening degree of the valve; the value of the opening degree of the valve is the percentage of the opening size of the valve, which will not be further elaborated here.

[0043] In a specific implementation manner of the embodiment of the present invention, the acquisition process of the valve adjustment weight includes: ; where is the valve adjustment weight of the reference valve corresponding to the target airbag at the current moment ; is the inflation and pressure increase hindrance degree of the target airbag ; is the inflation and pressure increase hindrance degree of the adjacent airbag connected to the target airbag through the reference valve ; is the air pressure value of the target airbag at the current moment ; is the air pressure value of the adjacent airbag connected to the target airbag through the reference valve at the current moment ; is the pressure increase hindrance deviation value of the target airbag on the reference valve ; is the air pressure reverse difference value of the target airbag on the reference valve ; is the maximization function ; is the maximization function, where the maximum value for maximization is obtained from historical data. ; ; ; ;

[0044] Thus, the adjusted power of the main air pump when the massage airbag is inflated and the corresponding real-time valve opening degree of the air pressure valve are obtained. Therefore, further, after adjusting the power of the main air pump for inflating each massage airbag to the adjusted power of the main air pump, the air pressure valve of each massage airbag is adjusted in real time according to the valve opening degree until the air pressure value of the corresponding massage airbag reaches the inflation requirement. Among them, the inflation requirement needs to be adjusted according to the massage requirements in the specific implementation environment, and no further elaboration will be made here.

[0045] In summary, the air valve noise control method for automotive seat airbag massage first judges the difficulty of pressure increase at different positions, that is, the degree of inflation pressure increase obstruction, according to the differences in air pressure changes when different airbags are inflated; and determines the intervention degree of the main air pump based on the main air pump intervention requirement characterized by the deviation in the trend prediction of air pressure, so that the adjusted power of the main air pump obtained by combining the inflation pressure increase obstruction degree and the main air pump intervention degree is more accurate; in addition, this application also considers that when the air pressure of adjacent massage airbags is relatively large or the pressure received is relatively large, the inflation can be assisted by opening the air pressure valve between the adjacent massage airbags, and further determines the real-time valve opening degree; thus, the effect of inflating the massage airbags of the automotive seat by combining the adjusted power of the main air pump and the real-time valve opening degree is better.

[0046] This application also provides an air valve noise control system for automotive seat airbag massage. Please refer to Figure 2 , which shows the structure diagram of an air valve noise control system for automotive seat airbag massage provided by an embodiment of the present invention. The system includes: a data acquisition and preprocessing module 201, a main air pump power determination module 202, and a massage airbag inflation module 203.

[0047] The data acquisition and preprocessing module 201 is used to obtain the air pressure time series curve of each massage airbag of the automotive seat within a preset time period after starting to inflate through the main air pump; and take the other massage airbags adjacent to each air pressure valve corresponding to each massage airbag as the adjacent airbags of the corresponding air pressure valves. The main air pump power determination module 202 is used to determine the degree of inflation pressure increase obstruction of each massage airbag according to the slope time series attenuation of the air pressure time series curve; determine the intervention degree of the main air pump for each massage airbag according to the prediction deviation of local air pressure changes on the air pressure time series curve; and determine the adjusted power of the main air pump according to the degree of inflation pressure increase obstruction and the intervention degree of the main air pump. The massage airbag inflation module 203 is used to determine the valve opening degree of the air pressure valve corresponding to the current moment according to the deviation of the inflation pressure increase obstruction degree between each massage airbag and the adjacent airbag and the real-time air pressure deviation; and continue to inflate the massage airbags of the automotive seat according to the adjusted power of the main air pump and the valve opening degree.

[0048] It should be noted that for the system provided in the above embodiments, only the division of the above functional modules is used for illustration. In actual applications, the above functions can be allocated to different functional modules according to needs, that is, the internal structure of the computer device is divided into different functional modules to complete all or part of the functions described above. In addition, the air valve noise control system for automotive seat airbag massage and the method embodiment of the air valve noise control method for automotive seat airbag massage provided in the above embodiments belong to the same concept. The specific implementation process can be found in the method embodiment and will not be elaborated here.

[0049] The embodiments of the present application also provide a computer device. Please refer to Figure 3 , which shows a schematic structural diagram of a computer device provided in an embodiment of the present invention. The computer device includes a memory 301, a processor 302, and a computer program 303 stored in the memory 301 and running on the processor 302. Among them, when the processor 302 executes the computer program 303, the computer device can execute any of the above-described air valve noise control methods for automotive seat airbag massage.

[0050] The embodiments of the present application also provide a computer program product. When the computer program product runs on a computer device, the computer device can execute any of the above-described air valve noise control methods for automotive seat airbag massage.

[0051] The embodiments of the present application also provide a computer-readable storage medium. The computer-readable storage medium stores computer program code. When the computer program code runs on a computer device, the computer device can execute any of the above-described air valve noise control methods for automotive seat airbag massage.

[0052] In the embodiments provided in the present application, it should be understood that the provided computer device, computer program product, and computer-readable storage medium are all used to execute the corresponding methods provided above. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects in the methods provided above and will not be elaborated here.

[0053] It should be noted that the above sequence of the embodiments of the present invention is only for description and does not represent the superiority or inferiority of the embodiments. The processes depicted in the drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be beneficial.

[0054] Each embodiment in this specification is described in a progressive manner. The same or similar parts among the embodiments can be referred to each other, and the key points of each embodiment are the differences from other embodiments.

Claims

1. An air valve noise control method for automotive seat airbag massage, characterized in that, The method includes: Obtaining the air pressure time series curve of each massage airbag of the vehicle seat within a preset time period after starting inflation by the main air pump; taking the other massage airbags adjacent to each air pressure valve corresponding to each massage airbag as the adjacent airbags of the corresponding air pressure valve; Determining the inflation and pressure increase obstruction degree of each massage airbag according to the slope time series attenuation condition of the air pressure time series curve; determining the main air pump intervention degree of each massage airbag according to the predicted deviation condition of the local air pressure change on the air pressure time series curve; determining the adjusted power of the main air pump according to the inflation and pressure increase obstruction degree and the main air pump intervention degree; Determining the valve opening degree of the air pressure valve corresponding to the current moment according to the deviation condition of the inflation and pressure increase obstruction degree between each massage airbag and the adjacent airbag and the real-time air pressure deviation condition; continuing to inflate the massage airbags of the vehicle seat according to the adjusted power of the main air pump and the valve opening degree.

2. The air valve noise control method for automotive seat airbag massage according to claim 1, wherein, The obtaining process of the inflation and pressure increase obstruction degree includes: Obtaining the feature points in the air pressure time series curve through the Douglas-Peucker algorithm; connecting each feature point in chronological order to obtain each analysis line segment; taking the analysis line segment with a slope less than the preset slope threshold as the feature line segment; determining the attenuation ratio according to the ratio between the number of feature line segments and the number of analysis line segments; determining the corresponding obstruction rate according to the chronological distribution condition of the slope attenuation of each analysis line segment; determining the inflation and pressure increase obstruction degree of each massage airbag according to the product of the obstruction rate and the attenuation ratio.

3. The air valve noise control method for automotive seat airbag massage according to claim 2, characterized in that, The obtaining process of the obstruction rate includes: Taking the difference between the slope of each analysis line segment and the slope of the next analysis line segment as the slope attenuation value of each analysis line segment; performing a negative correlation mapping on the time length between the first moment of the analysis line segment with the largest slope attenuation value and the starting moment to determine the obstruction rate.

4. A method for controlling the air valve noise of an airbag massage for an automotive seat according to claim 2, characterized in that, The obtaining process of the main air pump intervention degree includes: On the air pressure time series curve, taking all the moments after the first moment of the analysis line segment with the smallest slope as the reference moments; determining the predicted air pressure difference of each reference moment according to the air pressure value attenuation rule condition before each reference moment; maximizing the difference between the predicted air pressure difference of each reference moment and the predicted air pressure difference of the previous reference moment to determine the predicted air pressure attenuation value; Taking the sum value of the air pressure value of each reference moment and the predicted air pressure attenuation value as the corresponding air pressure prediction value; on the air pressure time series curve, taking the moment with the air pressure value equal to the air pressure prediction value of each reference moment as the comparison moment of each reference moment; taking the minimum value of the time interval between each reference moment and all comparison moments as the predicted duration deviation value of each reference moment; Determining the reference intervention degree of each reference moment according to the product of the predicted air pressure attenuation value of each reference moment and the predicted duration deviation value; determining the main air pump intervention degree of each massage airbag according to the normalized value of the mean of the reference intervention degrees of all reference moments.

5. A method for controlling the air valve noise in the airbag massage of an automotive seat according to claim 4, characterized in that, The obtaining process of the predicted air pressure difference includes: The difference between the air pressure value at each reference time and the air pressure value at the previous time is used as the reference air pressure difference at each reference time; all the reference air pressure differences before each reference time are arranged in chronological order to obtain the air pressure difference sequence at each reference time; the corresponding predicted air pressure difference is determined according to the air pressure difference sequence by an autoregressive model.

6. A method for controlling the noise of an air valve for automotive seat airbag massage according to claim 1, characterized in that, The process of obtaining the adjusted power of the main air pump includes: Determine the degree of power adjustment according to the degree of inflation and pressure increase obstruction and the degree of intervention of the main air pump; determine the adjusted power of the main air pump according to the product of the degree of power adjustment and the preset prior power of the main air pump.

7. A method for controlling the air valve noise of an airbag massage for an automotive seat according to claim 6, characterized in that, The process of obtaining the degree of power adjustment includes: Perform a positive correlation mapping on the product of the degree of inflation and pressure increase obstruction and the degree of intervention of the main air pump to determine the degree of power adjustment.

8. A method for controlling the air valve noise of an airbag massage for an automotive seat according to claim 1, characterized in that, The process of obtaining the valve opening degree includes: Successively take each massage airbag as the target airbag; take the air pressure valve between the target airbag and each corresponding adjacent airbag as the reference valve; Determine the valve adjustment weight of the target airbag on the reference valve at the current moment according to the deviation of the degree of inflation and pressure increase obstruction and the real-time deviation of the air pressure value between each adjacent airbag and the target airbag; determine the valve opening degree of the reference valve corresponding to the target airbag at the current moment according to the valve adjustment weight.

9. A method for controlling the air valve noise of an airbag massage for an automotive seat according to claim 8, characterized in that, The process of obtaining the valve adjustment weight includes: Maximize the difference between the degree of inflation and pressure increase obstruction of each adjacent airbag and the degree of inflation and pressure increase obstruction of the target airbag to determine the pressure increase obstruction deviation value of the target airbag on the reference valve; maximize the difference between the air pressure value of each adjacent airbag and the air pressure value of the target airbag at the current moment to determine the corresponding air pressure inverse difference value; determine the valve adjustment weight according to the sum value between the pressure increase obstruction deviation value and the air pressure inverse difference value.

10. A method for controlling the air valve noise of an airbag massage for an automotive seat according to claim 1, characterized in that, The process of continuing to inflate the massage airbags of the car seat according to the adjusted power of the main air pump and the valve opening degree includes: After adjusting the power of the main air pump for inflating each massage airbag to the adjusted power of the main air pump, adjust the air pressure valve of each massage airbag in real time according to the valve opening degree until the air pressure value of the corresponding massage airbag reaches the inflation requirement.

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