Method and system for evaluating comprehensive comfort level of automobile

Abstract

The invention provides an automobile comprehensive comfort evaluation method and system, and belongs to the technical field of in-automobile environment adjustment methods. The problems that in the prior art, cabin comfort cannot be monitored in real time and comprehensive evaluation cannot be carried out are solved. Comprising the following steps: step 1, acquiring environmental parameters of a cabin and feedback parameters of personnel to a current environment in real time; 2, acquiring an environmental comfort evaluation index corresponding to each environmental parameter; 3, obtaining a comprehensive comfort evaluation index of the global environment; 4, calculating the comfort level of the automobile cabin based on the comprehensive comfort evaluation index; 5, judging whether the personnel send out feedback adjustment according to a display result or not; and step 6, uploading a regulation and control feedback result to a cloud server, and updating a comfort level evaluation index in real time. According to the method, comprehensive evaluation can be carried out on the environment in combination with various environmental factors, dynamic deviation of comfort evaluation caused by adaptability of personnel to the environment is considered, and the comfort of the cabin can be monitored in real time and comprehensive evaluation can be carried out.

Description

Technical Field

[0001] The present invention belongs to the technical field of in-vehicle environment adjustment methods, and in particular relates to an automobile comprehensive comfort evaluation method and system. Background Art

[0002] The existing driving scenarios are complex and changeable, covering not only the diversity of geographical environments such as urban roads, highways, and mountain roads, but also the unpredictability of severe weather conditions such as sunny days, rainy days, snowy days, and haze. However, in such a diverse driving environment, the evaluation method of the in-vehicle environmental comfort is relatively single and fixed, lacking sufficient flexibility and adaptability.

[0003] Traditional comfort evaluation systems are often based on a series of fixed standards and indicators, ignoring the differences in the adaptability of different people to the environment. This difference in adaptability actually leads to a dynamic shift in comfort evaluation, because each passenger has a unique tolerance for temperature, humidity, noise, and seat hardness. More importantly, this degree of acceptance is not static, but may change with the extension of driving time, changes in the physical condition of passengers, and the continuous influence of the external environment.

[0004] Therefore, the existing evaluation system has obvious deficiencies in real-time monitoring of cabin comfort and comprehensive evaluation. It cannot accurately capture the real feelings of passengers in different driving scenarios, nor can it dynamically adjust and optimize according to the real-time feedback of passengers. This not only affects the passenger experience, but also may pose a potential threat to driving safety. Summary of the invention

[0005] In view of this, the present invention provides a method and system for evaluating the comprehensive comfort of an automobile to solve the problem in the prior art that the driving scenes are complex and changing, while the evaluation of the comfort of the in-car environment is single and fixed, and the dynamic deviation of the comfort evaluation caused by the adaptability of the personnel to the environment is not considered, so the cabin comfort cannot be monitored in real time and a comprehensive evaluation cannot be performed.

[0006] The technical solution adopted by the present invention is as follows:

[0007] Automobile comprehensive comfort evaluation method, including:

[0008] Step 1: Real-time collection of multiple environmental parameters in the car cabin and personnel’s feedback parameters on the current environment;

[0009] In step 1, the environmental parameters include: acoustic vibration parameters, pressure parameters, thermal environment parameters, light environment parameters and air quality parameters.

[0010] Environmental parameters include the following theories:

[0011] Thermal environment indicators are often characterized by thermal environment parameters related to heat exchange between the human body and the environment, including air temperature, humidity, air flow rate, average radiation temperature and other parameters, and comfort is evaluated based on the thermal equilibrium state.

[0012] The vibration environment often uses the vehicle body vibration acceleration and vibration frequency to evaluate the vibration characteristics of the train, which is determined by the stability index values ​​of accelerations of different frequencies.

[0013] Pressure fluctuations are combined with human physiological needs and air pressure changes. The comfort level is evaluated by considering the amplitude of the human ear's response to external air pressure changes and the amplitude of the pressure change within the time period required for self-adjustment of the pressure change. The following formula must be met:

[0014] [p bw ]<[p bw ] max

[0015]

[0016] Among them, [p bw ] is the pressure change amplitude, kPa or Pa; is the rate of change of pressure, kPa / s or Pa / s.

[0017] The acoustic environment is often characterized by the time-weighted instantaneous sound pressure level LAτ (dB) or the equivalent sound pressure level LA. The evaluation index needs to be determined in combination with the physiological and psychological acceptance thresholds of the human body.

[0018] Air quality is often related to the concentration of pollutants in the spatial environment, so environmental evaluation indicators are often characterized by the concentration of pollutants in the air.

[0019] The most important indicator of light environment level is illumination, and the visual comfort and health of the human eye are often evaluated by the impact of the light environment on changes in the physiological functions of human vision and visual fatigue.

[0020] Step 2: Obtain the environmental comfort evaluation index corresponding to each environmental parameter respectively;

[0021] Step 2 specifically includes the following steps:

[0022] Step 2.1: Obtain the acoustic environment comfort evaluation value y 1 , light environment comfort evaluation value y 2 , thermal environment evaluation value y 3 , air quality evaluation value y 4 And the pressure environment evaluation value y 5 ;

[0023] Step 2.1 specifically includes:

[0024] Get the acoustic environment comfort evaluation value, as shown in the following formula:

[0025] y 1 =-a 1 N+b 1

[0026] Among them, a 1 、b 1 is the characteristic value of the acoustic vibration environment, y 1 is the evaluation value of the noise and vibration comfort of the automobile cabin, and N is the evaluation value obtained by using the A sound level as the evaluation method;

[0027] Get the light environment comfort evaluation value, as shown in the following formula:

[0028] y 2 =-a 2 C 2 +b 2 C+c 2

[0029] Among them, a 2 、b 2 、c 2 is the characteristic value of the light environment, y 2 is the evaluation value of the light environment comfort of the car cabin, and C is the illumination in the car cabin;

[0030] Get the thermal environment evaluation value as shown in the following formula:

[0031] y 3 =-a 3 T 2 +b 3 Tc 3

[0032] Among them, a 3 、b 3 、c 3 is the characteristic value of the thermal environment, y 3 is the thermal environment evaluation value of the car cabin, T is the comprehensive thermal environment index in the cabin;

[0033] Get the air quality evaluation value as shown below:

[0034] y 4 =-a 4 V 2 +b 4 V+c 4

[0035] Among them, a 4 、b 4 、c 4 is the characteristic value of the air quality environment, y 4 is the evaluation value of the air quality comfort level in the vehicle cabin, and is the concentration of pollutants in the cabin air;

[0036] Get the pressure environment evaluation value as shown in the following formula:

[0037] y 5 =-a 5 P 2 +b 5 P+c 5

[0038] Among them, a 5 , b 5 、c 5 is the characteristic value of the pressure environment, y 5 is the evaluation value of the vehicle cabin pressure environment comfort, and P is the cabin air pressure characterization parameter.

[0039] Step 2.2: Standardize the various comfort evaluation values ​​in step 2.1 using the following formula:

[0040]

[0041] Among them, y i is the comfort evaluation value of the i-th type of environment; y i,max is the maximum value of the comfort evaluation value of this type of environment; i,min It is the minimum value of the comfort evaluation value of this type of environment.

[0042] Step 3: Based on the feedback parameters of step 1 and the comfort evaluation index of each environment obtained in step 2, the comprehensive comfort evaluation index of the global environment is obtained;

[0043] The step 3 specifically includes the following steps:

[0044] Step 3.1: Based on the weight ratio method, compare the evaluation indicators obtained in step 2 two by two to determine the relative importance of each indicator, and obtain the subjective evaluation weight of each environmental factor; the judgment matrix construction formula is:

[0045]

[0046] Among them, b ij represents the importance of the i-th environmental factor relative to the j-th environmental factor, b i , b j is the subjective evaluation score corresponding to each indicator factor.

[0047] The step 3.1 specifically includes the following steps:

[0048] Step 3.11: Use the sum-product method, square root method and reciprocal sum method to obtain the preliminary subjective evaluation weights w of environmental factors respectively. 1i 、w 2i and w 3i , as follows:

[0049] The sum-product method is used to calculate the weights and construct a column-normalized matrix B′, where the elements are:

[0050]

[0051] Among them, b ij ′ is a matrix element, i, j are environmental factors, and n is the total number of influencing factors.

[0052] Perform a row summation on a vector S, whose elements are:

[0053]

[0054] Where S i represents the sum vector of the i-th environmental factor;

[0055] Calculate the approximate solution W of the eigenvector 1 , where the elements are:

[0056]

[0057] The square root method is used to calculate the weight, and the formula is as follows:

[0058] Compute the row product vector P, where the elements are:

[0059]

[0060] Compute the nth root vector Q of the row product, where the elements are:

[0061]

[0062] Calculate the approximate solution W of the eigenvector 2 , where the elements are:

[0063]

[0064] The weight calculation is performed using the inverse row method. The formula is as follows:

[0065] Compute the row product vector H, where the elements are:

[0066]

[0067] Compute the inverse vector G of the row product, where the elements are:

[0068]

[0069] Compute the sum vector R of the reciprocals of the row products, where the elements are:

[0070]

[0071] Calculate the approximate solution W of the eigenvector 3 , where the elements are:

[0072]

[0073] Step 3.12: Take the average of the results of the sum-product method, square root method and reciprocal sum method as the subjective evaluation weight w i The result is as follows:

[0074]

[0075] Step 3.2: Use the improved entropy weight method to weight the feedback parameters obtained in step 1 to obtain the objective evaluation weight of each environmental factor;

[0076] The step 3.2 specifically includes the following steps:

[0077] Step 3.21: Construct an objective evaluation matrix X, where the elements are:

[0078]

[0079] Among them, n is the number of environmental comfort factors, and m is the number of people participating in the objective evaluation;

[0080] Step 3.22: Calculate the weight p of the i-th evaluation indicator in the objective evaluation matrix in the j-th evaluator's score. ij , the formula is as follows:

[0081]

[0082] Step 3.23: Calculate the entropy value H of the i-th comfort evaluation index i , the formula is as follows:

[0083]

[0084] Step 3.24: Calculate the objective weight w of each comfort factor i , the formula is as follows:

[0085]

[0086] Step 3.3: Use the penalized substitution synthesis method to allocate the subjective evaluation weights and the objective evaluation weights to obtain the comprehensive comfort evaluation index.

[0087] The step 3.3 specifically includes the following steps:

[0088] Step 3.31: Combine the subjective weights and objective weights to obtain the weight vectors W k =(Wk1 ,W k2 …W kn ), the formula is as follows:

[0089]

[0090] Where k = 1, 2, ... n, is the transpose of the weight vector, T is the mathematical transpose symbol, α k is the linear combination coefficient of n weight vectors, α k =(α k1 ,α k2 …α kn );

[0091] Step 3.32: For the linear combination coefficient α k Optimize to obtain the optimal combination weight vector W * , so that W * The deviation from W is the smallest, so the countermeasure model is introduced:

[0092]

[0093] Step 3.33: According to the matrix differential properties, the linear equation system corresponding to the optimal derivative condition of the formula in step 3.31 is:

[0094]

[0095] Solve the linear equations and perform normalization to obtain the linear combination coefficient α of the comprehensive vector * :

[0096]

[0097] Step 3.34: Obtain the optimal combination weight vector W based on game theory * for:

[0098]

[0099] Step 3.35: Obtain the comprehensive comfort evaluation index Y by the following formula:

[0100]

[0101] where y 1 ,y 2 ,y 3 ,y 4 and 5 are the evaluation values ​​of acoustic vibration, light, heat, air quality, and pressure comfort indicators, and They are the comprehensive weights for comfort evaluation of sound and vibration, light, heat, air quality and pressure.

[0102] Step 4: Calculate the comfort level of the car cabin based on the comprehensive comfort evaluation index and display it digitally on the dashboard of the cabin;

[0103] In step 4, the comfort level satisfies the following rules:

[0104] When 0≤Y≤2, the comfort level is unbearable;

[0105] When 2<Y≤4, the comfort level is very uncomfortable;

[0106] When 4<Y≤6, the comfort level is uncomfortable;

[0107] When 6<Y≤8, the comfort level is generally comfortable;

[0108] When 8<Y≤10, the comfort level is comfortable.

[0109] The comfort level is determined in two dimensions;

[0110] The first dimension is to test whether the environmental parameters meet the current standard requirements of a single type of environmental factors;

[0111] The second dimension is to calculate whether the comprehensive environmental indicators meet the current comfort level requirements.

[0112] Step 5: Determine whether the personnel issue feedback adjustments based on the displayed results;

[0113] Step 6: Determine the control feedback results, upload the control feedback results to the cloud server, and update the comfort evaluation index in real time.

[0114] Automobile comprehensive comfort evaluation system, including:

[0115] Data transmission module: real-time transmission and calculation of comprehensive cabin comfort index and comfort level;

[0116] Data display module: Based on the parameters of the car cabin comfort index, the brightness distribution of pixels in the three-dimensional image in the cabin is calculated to generate car cabin comfort images with different brightness and display them in real time on the car dashboard;

[0117] Personnel adjustable option module: displays adjustable parameters and options near the three-dimensional image;

[0118] Image feedback module: Based on the parameters of the change in cabin comfort after personnel adjustment, the global brightness of the three-dimensional image is dynamically adjusted to generate a dynamically brightened cabin comfort image.

[0119] Also includes:

[0120] Detection module, used to detect various environmental parameters of the car cabin;

[0121] A transmission module, used to transmit the detection data to a cloud server;

[0122] The calculation and prediction module is used to analyze the vehicle cabin parameters and the comfort feedback of the passengers, and calculate the single and comprehensive comfort indexes;

[0123] The judgment module is used to judge whether the corresponding comfort index meets the satisfaction rate requirement and give a comfort level recommendation;

[0124] The data feedback module is used to provide real-time feedback of cabin environment personnel controls to the data processing module so that the database can be updated in a timely manner.

[0125] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0126] 1. The present invention is used for comprehensive comfort evaluation of the interactive environment of heat, sound, vibration, light, pressure, air quality, etc. in the car cabin. It can combine multiple environmental factors to conduct a comprehensive evaluation of the environment, and consider the dynamic deviation of the comfort evaluation caused by the adaptability of personnel to the environment. It can monitor the cabin comfort in real time and conduct a comprehensive evaluation. BRIEF DESCRIPTION OF THE DRAWINGS

[0127] The present invention will now be described by way of example with reference to the accompanying drawings, in which:

[0128] Figure 1 This is a schematic diagram of the flow structure of a method for evaluating comprehensive comfort of an automobile according to Embodiment 1 of the present invention;

[0129] Figure 2 This is a schematic diagram of the structure of an automobile comprehensive comfort evaluation system according to Example 2 of the present invention. DETAILED DESCRIPTION

[0130] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0131] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0132] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features of the embodiments may be combined with each other.

[0133] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0134] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0135] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features of the embodiments may be combined with each other.

[0136] Example 1

[0137] like Figure 1 As shown, the embodiment of the present invention discloses a method for evaluating comprehensive comfort of an automobile, comprising:

[0138] Step 1: Real-time collection of multiple environmental parameters in the car cabin and personnel’s feedback parameters on the current environment;

[0139] In step 1, the environmental parameters include: acoustic vibration parameters, pressure parameters, thermal environment parameters, light environment parameters and air quality parameters.

[0140] The operating parameters include the following theories:

[0141] Thermal environment indicators are often characterized by thermal environment parameters related to heat exchange between the human body and the environment, including air temperature, humidity, air flow rate, average radiation temperature and other parameters, and comfort is evaluated based on the thermal equilibrium state.

[0142] The vibration environment often uses the vehicle body vibration acceleration and vibration frequency to evaluate the vibration characteristics of the train, which is determined by the stability index values ​​of accelerations of different frequencies.

[0143] Pressure fluctuations are combined with human physiological needs and air pressure changes. The comfort level is evaluated by considering the amplitude of the human ear's response to external air pressure changes and the amplitude of the pressure change within the time period required for self-adjustment of the pressure change. The following formula must be met:

[0144] [p bw ]<[p bw ] max

[0145]

[0146] Among them, [p bw ] is the pressure change amplitude, kPa or Pa; is the rate of change of pressure, kPa / s or Pa / s.

[0147] The acoustic environment is often characterized by the time-weighted instantaneous sound pressure level LAτ (dB) or the equivalent sound pressure level LA. The evaluation index needs to be determined in combination with the physiological and psychological acceptance thresholds of the human body.

[0148] Air quality is often related to the concentration of pollutants in the spatial environment, so environmental evaluation indicators are often characterized by the concentration of pollutants in the air.

[0149] The most important indicator of light environment level is illumination, and the visual comfort and health of the human eye are often evaluated by the impact of the light environment on changes in the physiological functions of human vision and visual fatigue.

[0150] Step 2: Obtain the environmental comfort evaluation index corresponding to each environmental parameter respectively;

[0151] Step 2 specifically includes the following steps:

[0152] Step 2.1: Obtain the acoustic environment comfort evaluation value y 1 , light environment comfort evaluation value y 2 , thermal environment evaluation value y 3 , air quality evaluation value y 4 And the pressure environment evaluation value y 5 ;

[0153] Step 2.1 specifically includes:

[0154] Get the acoustic environment comfort evaluation value, as shown in the following formula:

[0155] y 1 =-a 1 N+b 1

[0156] Among them, a 1 、b 1 is the characteristic value of the acoustic vibration environment, y 1 is the evaluation value of the noise and vibration comfort of the automobile cabin, and N is the evaluation value obtained by using the A sound level as the evaluation method;

[0157] Get the light environment comfort evaluation value, as shown in the following formula:

[0158] y2 =-a 2 C 2 +b 2 C+c 2

[0159] Among them, a 2 , b 2 、c 2 is the characteristic value of the light environment, y 2 is the evaluation value of the light environment comfort of the car cabin, and C is the illumination in the car cabin;

[0160] Get the thermal environment evaluation value as shown in the following formula:

[0161] y 3 =-a 3 T 2 +b 3 Tc 3

[0162] Among them, a 3 , b 3 、c 3 is the characteristic value of the thermal environment, y 3 is the thermal environment evaluation value of the car cabin, T is the comprehensive thermal environment index in the cabin;

[0163] Get the air quality evaluation value as shown below:

[0164]

[0165] Among them, a 4 , b 4 、c 4 is the characteristic value of the air quality environment, y 4 is the evaluation value of the air quality comfort level in the vehicle cabin, and is the concentration of pollutants in the cabin air;

[0166] Get the pressure environment evaluation value as shown in the following formula:

[0167] y 5 =-a 5 P 2 +b 5 P+c 5

[0168] Among them, a 5 , b 5 、c 5 is the characteristic value of the pressure environment, y 5 is the evaluation value of the vehicle cabin pressure environment comfort, and P is the cabin air pressure characterization parameter.

[0169] Step 2.2: Standardize the various comfort evaluation values ​​in step 2.1 using the following formula:

[0170]

[0171] Among them, y i is the comfort evaluation value of the i-th type of environment; y i,max is the maximum value of the comfort evaluation value of this type of environment; i,min It is the minimum value of the comfort evaluation value of this type of environment.

[0172] Step 3: Based on the feedback parameters of step 1 and the comfort evaluation index of each environment obtained in step 2, the comprehensive comfort evaluation index of the global environment is obtained;

[0173] The step 3 specifically comprises the following steps:

[0174] Step 3.1: Based on the weight ratio method, compare the evaluation indicators obtained in step 2 two by two to determine the relative importance of each indicator, and obtain the subjective evaluation weight of each environmental factor; the judgment matrix construction formula is:

[0175]

[0176] Among them, b ij represents the importance of the i-th factor relative to the j-th factor, b i 、b j is the subjective evaluation score corresponding to each indicator factor.

[0177] The step 3.1 specifically includes the following steps:

[0178] Step 3.11: Use the sum-product method, square root method and reciprocal sum method to obtain the preliminary subjective evaluation weights w of environmental factors respectively. 1i 、w 2i and w 3i , as follows:

[0179] The sum-product method is used to calculate the weights, and the formula is as follows:

[0180] Construct a column normalized matrix B′, where the elements are:

[0181]

[0182] Perform row summation on vector S i , where the elements are:

[0183]

[0184] Calculate the approximate solution W of the eigenvector 1 , where the elements are:

[0185]

[0186] The square root method is used to calculate the weight, and the formula is as follows:

[0187] Compute the row product vector P, where the elements are:

[0188]

[0189] Compute the nth root vector Q of the row product, where the elements are:

[0190]

[0191] Calculate the approximate solution W of the eigenvector 2 , where the elements are:

[0192]

[0193] The weight calculation is performed using the inverse row method. The formula is as follows:

[0194] Compute the row product vector H, where the elements are:

[0195]

[0196] Compute the inverse vector G of the row product, where the elements are:

[0197]

[0198] Compute the sum vector R of the reciprocals of the row products, where the elements are:

[0199]

[0200] Calculate the approximate solution W of the eigenvector 3 , where the elements are:

[0201]

[0202] Step 3.12: Take the average of the results of the sum-product method, square root method and reciprocal sum method as the subjective evaluation weight w i The result is as follows:

[0203]

[0204] Step 3.2: Use the improved entropy weight method to weight the feedback parameters obtained in step 1 to obtain the objective evaluation weight of each environmental factor;

[0205] Step 3.2: Use the improved entropy weight method to weight the feedback parameters obtained in step 1 to obtain the objective evaluation weight of each environmental factor;

[0206] The step 3.2 specifically includes the following steps:

[0207] Step 3.21: Construct an objective evaluation matrix X, where the elements are:

[0208]

[0209] Among them, n is the number of environmental comfort factors, and m is the number of people participating in the objective evaluation;

[0210] Step 3.22: Calculate the weight p of the i-th evaluation indicator in the objective evaluation matrix in the j-th evaluator's score. ij , the formula is as follows:

[0211]

[0212] Step 3.23: Calculate the entropy value H of the i-th comfort evaluation index i , the formula is as follows:

[0213]

[0214] Step 3.24: Calculate the objective weight w of each comfort factor i , the formula is as follows:

[0215]

[0216] Step 3.3: Use the penalized substitution synthesis method to allocate the subjective evaluation weights and the objective evaluation weights to obtain the comprehensive comfort evaluation index.

[0217] The step 3.3 specifically includes the following steps:

[0218] Step 3.31: Combine the subjective weights and objective weights to obtain the weight vectors W k =(W k1 ,W k2 …W kn ), the formula is as follows:

[0219]

[0220] Where k = 1, 2, ... n, is the transpose of the weight vector, α k is the linear combination coefficient of n weight vectors, α k =(α k1 ,α k2 …α kn );

[0221] Step 3.32: For the linear combination coefficient α k Optimize to obtain the optimal combination weight vector W* , so that W * The deviation from W is the smallest, so the countermeasure model is introduced:

[0222]

[0223] Step 3.33: According to the matrix differential properties, the linear equation system corresponding to the optimal derivative condition of the formula in step 3.31 is:

[0224]

[0225] Solve the linear equations and perform normalization to obtain the linear combination coefficient α of the comprehensive vector * :

[0226]

[0227] Step 3.34: Get the combined weight W based on game theory * for:

[0228]

[0229] Step 3.35: Obtain the comprehensive comfort evaluation index Y by the following formula:

[0230]

[0231] where y 1 ,y 2 ,y 3 ,y 4 and 5 are the evaluation values ​​of acoustic vibration, light, heat, air quality, and pressure comfort indicators, and They are the comprehensive weights for comfort evaluation of sound and vibration, light, heat, air quality and pressure.

[0232] Step 4: Calculate the comfort level of the car cabin based on the comprehensive comfort evaluation index and display it digitally on the dashboard of the cabin;

[0233] In step 4, the comfort level satisfies the following rules:

[0234] When 0≤Y≤2, the comfort level is unbearable;

[0235] When 2<Y≤4, the comfort level is very uncomfortable;

[0236] When 4<Y≤6, the comfort level is uncomfortable;

[0237] When 6<Y≤8, the comfort level is generally comfortable;

[0238] When 8<Y≤10, the comfort level is comfortable.

[0239] The comfort level is determined in two dimensions;

[0240] The first dimension is to test whether the environmental parameters meet the current standard requirements of a single type of environmental factors;

[0241] The second dimension is to calculate whether the comprehensive environmental indicators meet the current comfort level requirements.

[0242] Step 5: Determine whether the personnel issue feedback adjustments based on the displayed results;

[0243] Step 6: Determine the control feedback results, upload the control feedback results to the cloud server, and update the comfort evaluation index in real time.

[0244] Example 2

[0245] like Figure 2 As shown, this embodiment proposes a comprehensive automobile comfort evaluation system, including:

[0246] Data transmission module: real-time transmission and calculation of comprehensive cabin comfort index and comfort level;

[0247] Data display module: Based on the parameters of the car cabin comfort index, the brightness distribution of pixels in the three-dimensional image in the cabin is calculated to generate car cabin comfort images with different brightness and display them in real time on the car dashboard;

[0248] Personnel adjustable option module: displays adjustable parameters and options near the three-dimensional image;

[0249] Image feedback module: Based on the parameters of the change in cabin comfort after personnel adjustment, the global brightness of the three-dimensional image is dynamically adjusted to generate a dynamically brightened cabin comfort image.

[0250] Also includes:

[0251] Detection module, used to detect various environmental parameters of the car cabin;

[0252] A transmission module, used to transmit the detection data to a cloud server;

[0253] The calculation and prediction module is used to analyze the vehicle cabin parameters and the comfort feedback of the passengers, and calculate the single and comprehensive comfort indexes;

[0254] The judgment module is used to judge whether the corresponding comfort index meets the satisfaction rate requirement and give a comfort level recommendation;

[0255] The data feedback module is used to provide real-time feedback of cabin environment personnel controls to the data processing module so that the database can be updated in a timely manner.

[0256] The circuits, electronic components and modules involved are all prior art and can be fully implemented by those skilled in the art. Needless to say, the content protected by the present invention does not involve improvements to software and methods.

[0257] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0258] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for evaluating comprehensive automobile comfort, characterized in that: include: Step 1: Real-time collection of multiple environmental parameters in the car cabin and personnel’s feedback parameters on the current environment; Step 2: Obtain the environmental comfort evaluation index corresponding to each environmental parameter respectively; Step 3: Based on the feedback parameters of step 1 and the comfort evaluation index of each environment obtained in step 2, the comprehensive comfort evaluation index of the global environment is obtained; Step 4: Calculate the comfort level of the car cabin based on the comprehensive comfort evaluation index and display it digitally on the dashboard of the cabin; Step 5: Determine whether the personnel issue feedback adjustments based on the displayed results; Step 6: Determine the control feedback results, upload the control feedback results to the cloud server, and update the comfort evaluation index in real time.

2. The method for evaluating comprehensive automobile comfort according to claim 1, characterized in that: In step 1, the environmental parameters include: acoustic vibration parameters, pressure parameters, thermal environment parameters, light environment parameters and air quality parameters.

3. The method for evaluating comprehensive automobile comfort according to claim 1, characterized in that: The step 2 specifically includes the following steps: Step 2.1: Obtain the acoustic environment comfort evaluation value y1, the light environment comfort evaluation value y2, the thermal environment evaluation value y3, the air quality evaluation value y4, and the pressure environment evaluation value y5 respectively; Step 2.2: Standardize the various comfort evaluation values ​​in step 2.1 using the following formula: Among them, y i is the comfort evaluation value of the i-th type of environment, y i,max is the maximum value of the comfort evaluation value of this type of environment, y i,min It is the minimum value of the comfort evaluation value of this type of environment.

4. The method for evaluating comprehensive automobile comfort according to claim 3, characterized in that: The step 2.1 specifically includes: Get the acoustic environment comfort evaluation value, as shown in the following formula: y1=-a1N+b1 Among them, a1 and b1 are the characteristic values ​​of the acoustic and vibration environment, y1 is the evaluation value of the noise and vibration comfort of the car cabin, and N is the evaluation value obtained by using the A sound level as the evaluation method for noise; Get the light environment comfort evaluation value, as shown in the following formula: y2=-a2C 2 +b2C+c2 Wherein, a2, b2, c2 are characteristic values ​​of the light environment, y2 is the evaluation value of the light environment comfort level in the car cabin, and c is the illumination in the car cabin; Get the thermal environment evaluation value as shown in the following formula: <h2 style=";text-align:left;direction:ltr">y3=-a3T<h2 style=";text-align:left;direction:ltr"> 2 <h2 style=";text-align:left;direction:ltr"> +b3T-c3 Wherein, a3, b3, c3 are characteristic values ​​of the thermal environment, y3 is the thermal environment evaluation value of the vehicle cabin, and T is the comprehensive thermal environment index in the cabin; Get the air quality evaluation value as shown below: y4=-a4V 2 +b4V+c4 Wherein, a4, b4, c4 are characteristic values ​​of the air quality environment, y4 is the evaluation value of the air quality comfort of the vehicle cabin, and V is the concentration of pollutants in the cabin air; Get the pressure environment evaluation value as shown in the following formula: y5=-a5P 2 +b5P+c5 Among them, a5, b5, c5 are characteristic values ​​of the pressure environment, y5 is the comfort evaluation value of the automobile cabin pressure environment, and P is the cabin air pressure characterization parameter.

5. The method for evaluating comprehensive automobile comfort according to claim 1, characterized in that: The step 3 specifically comprises the following steps: Step 3.1: Based on the weight ratio method, compare the evaluation indicators obtained in step 2 two by two to determine the relative importance of each indicator, and obtain the subjective evaluation weight of each environmental factor; Step 3.2: Use the improved entropy weight method to weight the feedback parameters obtained in step 1 to obtain the objective evaluation weight of each environmental factor; Step 3.3: Use the penalized substitution synthesis method to allocate the subjective evaluation weights and the objective evaluation weights to obtain the comprehensive comfort evaluation index.

6. The method for evaluating comprehensive automobile comfort according to claim 5, characterized in that: The step 3.1 specifically includes the following steps: Step 3.11: Use the sum-product method, square root method and reciprocal sum method to obtain the preliminary subjective evaluation weights w of environmental factors respectively. 1i 、w 2i and w 3i ; Step 3.12: Take the average of the results of the sum-product method, square root method and reciprocal sum method as the subjective evaluation weight w i The result is as follows:

7. The method for evaluating comprehensive automobile comfort according to claim 5, characterized in that: Step 3.3 specifically includes the following steps: Step 3.31: Combine the subjective weights and objective weights to obtain the weight vectors W k =(W k1 ,W k2 …W kn ), the formula is as follows: Where k = 1, 2, ... n, is the transpose of the weight vector, T is the mathematical transpose symbol, α k is the linear combination coefficient of n weight vectors, α k =(α k1 ,α k2 …α kn ); Step 3.32: Introduce the countermeasure model for the linear combination coefficient α k Optimize to obtain the optimal combination weight vector W * , so that W * The deviation from W is the smallest, as shown in the following formula: Step 3.33: According to the matrix differential properties, the linear equation system corresponding to the optimal derivative condition of the formula in step 3.31 is: Solve the linear equations and normalize them to get the linear combination coefficient α of the comprehensive vector * , as shown below: Step 3.34: Based on steps 3.31-3.33 and game theory, we get the optimal combination weight vector W. * for: Step 3.35: Based on the combined weight W * The comprehensive comfort evaluation index Y is obtained by the following formula: Among them, y1, y2, y3, y4 and y5 are the evaluation values ​​of acoustic vibration, light, heat, air quality and pressure comfort indicators respectively. and They are the evaluation weights of acoustic vibration, light, heat, air quality and pressure comfort respectively.

8. The method for evaluating comprehensive automobile comfort according to claim 7, characterized in that: In step 4, the comfort level satisfies the following rules: When 0≤Y≤2, the comfort level is unbearable; When 2<Y≤4, the comfort level is very uncomfortable; When 4<Y≤6, the comfort level is uncomfortable; When 6<Y≤8, the comfort level is generally comfortable; When 8<Y≤10, the comfort level is comfortable.

9. A vehicle comprehensive comfort evaluation system, used to implement the vehicle comprehensive comfort evaluation method according to any one of claims 1 to 8, characterized in that: include: Data transmission module: real-time transmission of the calculated cockpit comprehensive comfort index and comfort level to the data display module; Data display module: Based on the cabin comfort parameters, the module calculates the brightness distribution of pixels in the three-dimensional image in the cabin, generates cabin comfort images with different brightness, and displays them in real time on the car dashboard; Personnel adjustable option module: displays adjustable parameters and options near the three-dimensional image; Image feedback module: Based on the parameters of the change in cabin comfort after personnel adjustment, the global brightness of the three-dimensional image is dynamically adjusted to generate a dynamically brightened cabin comfort image.

10. The automobile comprehensive comfort evaluation system according to claim 9, characterized in that: Also includes: Detection module, used to detect various environmental parameters of the car cabin; A transmission module, used to transmit the detection data to a cloud server; The calculation and prediction module is used to analyze the vehicle cabin parameters and the comfort feedback of the passengers, and calculate the single and comprehensive comfort indexes; The judgment module is used to judge whether the corresponding comfort index meets the satisfaction rate requirement and give a comfort level recommendation; The data feedback module is used to provide real-time feedback of cabin environment personnel controls to the data processing module so that the database can be updated in a timely manner.

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