A passenger car head space evaluation method, device, equipment and medium

Abstract

The application provides a passenger car head space evaluation method and device, equipment and medium, belongs to the technical field of vehicle ergonomics, determines the whole vehicle coordinate system, and selects a plurality of benchmark vehicles according to the category of the vehicle to be evaluated; in the whole vehicle coordinate system, the basic head space parameters of the vehicle to be evaluated and each benchmark vehicle are calculated based on the established human body model; the qualified values of each basic head space parameter of the vehicle to be evaluated are determined based on the basic head space parameters of the benchmark vehicle, and whether the head space evaluation value of the vehicle to be evaluated is qualified is judged; if qualified, the basic head space parameters of the benchmark vehicle are normalized, and the weighted sum of each normalized result is obtained to obtain the head space evaluation value of the vehicle to be evaluated. Thus, the selected basic head space parameters are normalized, and the vehicle head space level can be evaluated intuitively and comprehensively.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicle ergonomics, in particular to a passenger car head space evaluation method, device, equipment and medium. BACKGROUND

[0002] Passenger car head space design is a crucial link in automobile design, which directly affects the comfort and safety of passengers. At present, when designing and evaluating the head space of passengers in a passenger car, there are multiple parameter benchmarks. When a single parameter is selected as a benchmark, the evaluation is not comprehensive, and the head space condition cannot be accurately reflected. When multiple parameters are selected as benchmarks, the head space level cannot be intuitively reflected. SUMMARY

[0003] Therefore, the purpose of the present application is to provide a passenger car head space evaluation method, device, equipment and medium, which can intuitively and comprehensively display the head space level of the test vehicle by normalizing each parameter.

[0004] In a first aspect, the present application provides a passenger car head space evaluation method, which comprises the following steps:

[0005] Determine the whole vehicle coordinate system, and select a plurality of benchmark vehicles according to the category of the vehicle to be evaluated;

[0006] Under the whole vehicle coordinate system, calculate the basic head space parameters of the vehicle to be evaluated and each benchmark vehicle based on the established human body model; wherein the basic head space parameters include one or more of the following: multiple passenger head space H61, minimum passenger head space H47, front windshield head space L38, passenger vertical head space H46, passenger side 30° head space W27, passenger side horizontal head space W35, passenger side vertical head space H35, and minimum passenger head space W38;

[0007] Determine the qualified value of each basic head space parameter of the vehicle to be evaluated based on the basic head space parameters of each benchmark vehicle, and determine whether the head space evaluation value of the vehicle to be evaluated is qualified according to the qualified value of each basic head space parameter of the vehicle to be evaluated;

[0008] If it is determined that the head space evaluation value of the vehicle to be evaluated is qualified, normalize each basic head space parameter, and weight and sum the normalized results to obtain the head space evaluation value of the vehicle to be evaluated.

[0009] In one possible implementation, the average value of each basic headroom parameter of the benchmark vehicle is set as the pass value for each basic headroom parameter, and the pass / fail status of the headroom evaluation value of the vehicle under test is determined by the following method:

[0010] If any of the basic headroom parameters of the vehicle under test is less than the corresponding qualified value, the headroom evaluation value of the vehicle under test is determined to be unqualified; if each of the basic headroom parameters of the vehicle under test is not less than the corresponding qualified value, the headroom evaluation value of the vehicle under test is determined to be qualified.

[0011] In one possible implementation, the normalization of the various basic header space parameters includes the following steps:

[0012] The maximum and minimum values ​​of the basic headroom parameters of the benchmark vehicle are obtained respectively;

[0013] Based on the various basic headspace parameters of the vehicle under test, as well as the corresponding maximum and minimum values, the standardized data of the various basic headspace parameters of the vehicle under test are calculated and used as the normalization result.

[0014] In one possible implementation, standardized data for various basic headroom parameters of the vehicle under test are calculated using the following formula:

[0015] Hn=(HH MIN ) / (Hmax-H MIN )

[0016] Where H represents any basic headroom parameter of the vehicle under test, and Hmax represents the maximum value of the corresponding basic headroom parameter in the benchmark vehicle. MIN This represents the minimum value of the basic headroom parameter for the corresponding item in the benchmark vehicle.

[0017] In one possible implementation, the step of weighted summing of the normalization results to obtain the headroom evaluation value of the vehicle under evaluation includes the following steps:

[0018] Determine the weight values ​​of each basic headroom parameter of the vehicle to be evaluated; wherein the sum of the weight values ​​of each basic headroom parameter is 1.

[0019] The headspace evaluation value of the vehicle under test is calculated based on the standardized data of various basic headspace parameters of the vehicle under test and the corresponding weight values.

[0020] In one possible implementation, the headroom evaluation value of the vehicle under test is calculated using the following formula:

[0021] T = A1*Hn61 + A2*Hn47 + A3*Ln38 + A4*Hn46 + A5*Wn27 + A6*Wn35 + A7*Hn35 + A8*Wn38

[0022] wherein, T represents the head space evaluation value of the vehicle to be evaluated, A1 represents the weight value of the multi-choice passenger head space H61, A2 represents the weight value of the passenger minimum head space H47, A3 represents the weight value of the front windshield head space L38, A4 represents the weight value of the passenger vertical head space H46, A5 represents the weight value of the passenger side 30° head space W27, A6 represents the weight value of the passenger side horizontal head space W35, A7 represents the weight value of the passenger side vertical head space H35, and A8 represents the weight value of the passenger minimum head space W38.

[0023] In a possible implementation, the method further comprises the following steps:

[0024] mapping the head space evaluation value and the head space evaluation grade; wherein the head space evaluation values in different intervals correspond to different head space evaluation grades;

[0025] According to the calculated head space evaluation value of the vehicle to be evaluated and the mapping relationship, the head space evaluation grade of the vehicle to be evaluated is determined.

[0026] In a second aspect, the application provides a passenger car head space evaluation device, which comprises:

[0027] A determination module is configured to determine a whole vehicle coordinate system and select a plurality of benchmark vehicles according to the category of the vehicle to be evaluated.

[0028] A first calculation module is configured to calculate the basic head space parameters of the vehicle to be evaluated and each of the benchmark vehicles based on the established human body model in the whole vehicle coordinate system; wherein the basic head space parameters include one or more of the multi-choice passenger head space H61, the passenger minimum head space H47, the front windshield head space L38, the passenger vertical head space H46, the passenger side 30° head space W27, the passenger side horizontal head space W35, the passenger side vertical head space H35, and the passenger minimum head space W38.

[0029] A judgment module is configured to determine the qualified values of the basic head space parameters of the vehicle to be evaluated based on the basic head space parameters of the benchmark vehicles, and determine whether the head space evaluation value of the vehicle to be evaluated is qualified according to the qualified values of the basic head space parameters of the vehicle to be evaluated.

[0030] The second calculation module is configured to, if the head space evaluation value of the vehicle to be evaluated is determined to be qualified, normalize each basic head space parameter, and obtain the head space evaluation value of the vehicle to be evaluated by weighted summation of the normalized results.

[0031] In a third aspect, the present application provides an electronic device, comprising a processor, a memory and a bus, the memory stores machine readable instructions executable by the processor, when the electronic device is running, the processor and the memory communicate through the bus, and the machine readable instructions are executed by the processor to perform the steps of the head space evaluation method of the passenger car as described in the first aspect.

[0032] In a fourth aspect, the present application provides a computer readable storage medium, the computer readable storage medium stores a computer program, and the computer program is executed by the processor to perform the steps of the head space evaluation method of the passenger car as described in the first aspect.

[0033] The head space evaluation method, device, equipment and medium of the passenger car provided by the embodiment determine a whole vehicle coordinate system, and select a plurality of benchmark vehicles according to the category of the vehicle to be evaluated; in the whole vehicle coordinate system, the basic head space parameters of the vehicle to be evaluated and each benchmark vehicle are calculated based on the established human body model; the qualified values of the basic head space parameters of the vehicle to be evaluated are determined based on the basic head space parameters of each benchmark vehicle, and whether the head space evaluation value of the vehicle to be evaluated is qualified is determined according to the qualified values of the basic head space parameters of the vehicle to be evaluated; if the head space evaluation value of the vehicle to be evaluated is determined to be qualified, the basic head space parameters of the benchmark vehicles are normalized, and the head space evaluation value of the vehicle to be evaluated is obtained by weighted summation of the normalized results. Therefore, the normalization of the selected basic head space parameters can intuitively and comprehensively evaluate the head space level of the vehicle. BRIEF DESCRIPTION OF DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0035] Figure 1 The flowchart of the head space evaluation method of the passenger car in an embodiment of the present application;

[0036] Figure 2A schematic view of the occupant head space H61, the occupant minimum head space H47, the front windshield head space L38 and the occupant vertical head space H46 described in an embodiment of the present application;

[0037] Figure 3 A schematic view of the occupant side horizontal head space W35 described in an embodiment of the present application;

[0038] Figure 4 A schematic view of the occupant side vertical head space H35 described in an embodiment of the present application;

[0039] Figure 5 A schematic view of the occupant side 30° head space W27 described in an embodiment of the present application;

[0040] Figure 6 A structural block diagram of the head space evaluation device for passenger cars described in an embodiment of the present application;

[0041] Figure 7 A structural block diagram of the electronic device described in an embodiment of the present application. DETAILED DESCRIPTION

[0042] In order to make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. It should be understood that the drawings in the present application are only used for the purpose of description and illustration, and do not limit the scope of the present application. In addition, it should be understood that the schematic drawings are not drawn according to the actual proportions. The flowcharts show the operations implemented according to some embodiments of the present application. It should be understood that the operations of the flowcharts can not be implemented in sequence, and the steps without logical context relationship can be reversed in sequence or implemented simultaneously. In addition, one or more other operations can be added to the flowcharts or one or more operations can be removed from the flowcharts under the guidance of the content of the present application.

[0043] In addition, the described embodiments are only some of the embodiments of the present application, not all the embodiments. The components of the embodiments of the present application described and indicated in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0044] It should be noted that the term "comprising" will be used in the embodiments of the present application to indicate the presence of the features declared thereafter, but does not exclude the addition of other features.

[0045] Based on the technical problems proposed in the background art, the application provides a passenger car head space evaluation method, device, equipment and medium, which can intuitively and comprehensively show the head space level of the test vehicle by normalizing each parameter.

[0046] Referring to the drawings Figure 1 In an embodiment, the application provides a passenger car head space evaluation method, which comprises the following steps:

[0047] S1, determining a whole vehicle coordinate system, and selecting a plurality of benchmark vehicles according to the category of the vehicle to be evaluated;

[0048] S2, calculating the basic head space parameters of the vehicle to be evaluated and each benchmark vehicle based on the established human body model under the whole vehicle coordinate system; wherein the basic head space parameters include one or more of the following: passenger head space H61, passenger minimum head space H47, front windshield head space L38, passenger vertical head space H46, passenger side 30° head space W27, passenger side horizontal head space W35, passenger side vertical head space H35, and passenger minimum head space W38;

[0049] S3, determining the qualified values of each basic head space parameter of the vehicle to be evaluated based on the respective basic head space parameters of the benchmark vehicles, and judging whether the head space evaluation value of the vehicle to be evaluated is qualified according to the qualified values of each basic head space parameter of the vehicle to be evaluated;

[0050] S4, if it is judged that the head space evaluation value of the vehicle to be evaluated is qualified, normalizing each basic head space parameter, and weighting and summing the normalization results to obtain the head space evaluation value of the vehicle to be evaluated.

[0051] Specifically, in step S1, first, the definition of the whole vehicle coordinate system is clarified to ensure that the vehicle development work is carried out in the same coordinate system. In an embodiment, the definition of the whole vehicle coordinate system is referred to SAE J182, which covers specifications and requirements for specific aspects related to automotive engineering, which should be a technical feature familiar to those skilled in the art and will not be described here. Secondly, according to the vehicle type category, price and other factors of the vehicle to be evaluated, a certain number of benchmark vehicles are selected.

[0052] In step S2, before calculating the basic head space parameters of the vehicle to be evaluated and each of the pair of reference vehicles, in addition to defining the whole vehicle coordinate system, a human body model needs to be established according to the vehicle model category of the vehicle to be evaluated, i.e. confirming the dummy template type (at present, most companies uniformly select SAE 95% male human body template), determining the front row and second row dummy arrangement reference point SgRP (R point) according to the human body arrangement specification. Further, according to the established human body model, door data, roof data and other conditions, the basic head space data is obtained. The basic head space data selected in the present application includes one or more of the following: occupant head space H61, occupant minimum head space H47, front windshield head space L38, occupant vertical head space H46, occupant side 30° head space W27, occupant side horizontal head space W35, occupant side vertical head space H35, and occupant minimum head space W38.

[0053] Specifically, referring to the drawings attached to the specification Figure 2 The occupant head space H61, occupant minimum head space H47, front windshield head space L38 and occupant vertical head space H46 are measured by the following method: a plane CL parallel to the XZ plane is drawn through the R point, a straight line is drawn in the CL plane through the R point backward at an angle of 8° to the vertical direction, and the straight line segment length plus 102 mm is the occupant head space H61; a plane CL parallel to the XZ plane is drawn through the R point, and the minimum distance between the head contour envelope and the roof in the CL plane is the occupant minimum head space H47; a plane CL parallel to the XZ plane is drawn through the first row R point, and a horizontal line is drawn in the CL plane tangent to the roof, and the distance from the tangent point to the head contour envelope is the front windshield head space L38; a plane CL parallel to the XZ plane is drawn through the R point, and the head contour envelope is moved vertically upward and tangent to the roof in the CL plane, and the vertical distance of the movement is the occupant vertical head space H46.

[0054] Referring to the drawings attached to the specification Figure 3 The occupant side horizontal head space W35 is measured by the following method: a plane CM parallel to the YZ plane is drawn through the highest point of the head envelope, and the head contour envelope is moved horizontally left in the CM plane until it is tangent to the roof, and the horizontal movement distance is the occupant side horizontal head space W35.

[0055] Referring to the drawings attached to the specification Figure 4 The occupant side vertical head space H35 is measured by the following method: a plane CM parallel to the YZ plane is drawn through the highest point of the head envelope, and the head contour envelope is moved vertically upward in the CM plane until it is tangent to the roof, and the vertical movement distance is the occupant side vertical head space H35.

[0056] Referring to the drawings attached to the specification Figure 5The passenger side 30° headroom W27 is measured by the following method: a plane CM parallel to the YZ plane is made through the highest point of the head envelope Z, a straight line at an angle of 30° to the horizontal is made through the center point of the head contour envelope in the CM plane, the horizontal line tangent to the roof, and the head contour envelope line is moved along the straight line until it is tangent to the roof. The distance between the two head contour envelope center points on the straight line is the passenger side 30° headroom W27.

[0057] The minimum passenger headroom W38 is measured by the following method: the minimum gap between the head contour envelope surface in the 3D data and the interior trim part is the minimum passenger headroom W38.

[0058] In step S3, first, the qualified values of the basic headroom parameters of the vehicle to be evaluated are set by the measured basic headroom parameters of the reference vehicle. If any of the basic headroom parameters of the vehicle to be evaluated is less than the corresponding qualified value, it is determined that the headroom evaluation value of the vehicle to be evaluated is unqualified. If each of the basic headroom parameters of the vehicle to be evaluated is not less than the corresponding qualified value, it is determined that the headroom evaluation value of the vehicle to be evaluated is qualified.

[0059] In an embodiment, the average values of the basic headroom parameters of the reference vehicle are set as the qualified values of the basic headroom parameters. For example, by measuring the basic headroom parameters of a plurality of reference vehicles, the average value of the passenger headroom H61 is X1, the average value of the minimum passenger headroom H47 is X2, the average value of the front windshield headroom L38 is X3, the average value of the passenger vertical headroom H46 is X4, the average value of the passenger side 30° headroom W27 is X5, the average value of the passenger side horizontal headroom W35 is X6, the average value of the passenger side vertical headroom H35 is X7, and the average value of the minimum passenger headroom W38 is X8. By measuring the basic headroom parameters of the vehicle to be evaluated, the average value of the passenger headroom H61 is Y1, the average value of the minimum passenger headroom H47 is Y2, the average value of the front windshield headroom L38 is Y3, the average value of the passenger vertical headroom H46 is Y4, the average value of the passenger side 30° headroom W27 is Y5, the average value of the passenger side horizontal headroom W35 is Y6, the average value of the passenger side vertical headroom H35 is Y7, and the average value of the minimum passenger headroom W38 is Y8. If Y1-Y8 are all greater than or equal to the corresponding X1-X8, it is determined that the headroom evaluation value of the vehicle to be evaluated is qualified. If Y1-Y8 are not all greater than or equal to the corresponding X1-X8, i.e., if any of Y1-Y8 is less than the corresponding X1-X8, it is directly determined that the headroom evaluation value of the vehicle to be evaluated is unqualified, which is a poor design.

[0060] In step S4, for the judgment of the head space evaluation value of the vehicle to be evaluated, the head space evaluation value thereof needs to be further determined, so as to intuitively and comprehensively show the head space level of the vehicle to be evaluated. Specifically, the maximum value and the minimum value of each basic head space parameter of the benchmark vehicle are obtained respectively, and then the normalized data of each basic head space parameter of the vehicle to be evaluated is calculated based on each basic head space parameter of the vehicle to be evaluated and the corresponding maximum value and minimum value, and is taken as the normalization processing result. In an embodiment, the normalized data of each basic head space parameter of the vehicle to be evaluated is calculated by the following formula: Hn=(H-H MIN ) / (Hmax-H MIN ), wherein H represents any basic head space parameter of the vehicle to be evaluated, Hmax represents the maximum value of the corresponding basic head space parameter in the benchmark vehicle, and Hmin represents the minimum value of the corresponding basic head space parameter in the benchmark vehicle.

[0061] For example, the passenger head space H61 is normalized to obtain the corresponding normalized data Hn61=(H-H MIN ) / (Hmax-H MIN ), wherein Hn61 represents the normalized data of the passenger head space H61, H represents the measurement data of the passenger head space H61 of the vehicle to be evaluated, Hmax and H MIN represent the maximum value and the minimum value in the measurement data of the passenger head space H61 of a plurality of benchmark vehicles.

[0062] After obtaining the normalized data of each basic head space parameter, the weight value of each basic head space parameter of the vehicle to be evaluated is further determined; the sum of the weight values of each basic head space parameter is 1; and the head space evaluation value of the vehicle to be evaluated is calculated based on the normalized data of each basic head space parameter of the vehicle to be evaluated and the corresponding weight value. In an embodiment, the head space evaluation value of the vehicle to be evaluated is calculated by the following formula:

[0063] T=A1*Hn61+A2*Hn47+A3*Ln38+A4*Hn46+A5*Wn27+A6*Wn35+A7*Hn35+A8*Wn38

[0064] Wherein, T represents the head space evaluation value of the vehicle to be evaluated, A1 represents the weight value of the passenger head space H61, A2 represents the weight value of the passenger minimum head space H47, A3 represents the weight value of the front windshield head space L38, A4 represents the weight value of the passenger vertical head space H46, A5 represents the weight value of the passenger side 30° head space W27, A6 represents the weight value of the passenger side horizontal head space W35, A7 represents the weight value of the passenger side vertical head space H35, and A8 represents the weight value of the passenger minimum head space W38.

[0065] Wherein, the weight value is related to the evaluation emphasis, for example, when more attention is paid to the subjective feeling of the passenger, the weight values of the passenger minimum head space H47, the front windshield head space L38, the passenger vertical head space H46, the passenger side 30° head space W27, and the passenger side horizontal head space W35 can be appropriately increased.

[0066] Further, the application also constructs a mapping relationship between the head space evaluation value and the head space evaluation grade; wherein the head space evaluation values in different intervals correspond to different head space evaluation grades; according to the calculated head space evaluation value of the vehicle to be evaluated and the mapping relationship, the head space evaluation grade of the vehicle to be evaluated is determined.

[0067] In an embodiment, the pre-constructed mapping relationship between the head space evaluation value and the head space evaluation grade is shown in Table 1, wherein the head space evaluation grade includes excellent, good, and pass, the head space evaluation value interval corresponding to the excellent head space evaluation grade is [90, 100]; the head space evaluation value interval corresponding to the good head space evaluation grade is [75, 90]; and the head space evaluation value interval corresponding to the pass head space evaluation grade is [60, 75].

[0068] Rank Score Excellent [90,100] Good [75,90) Medium [60,75)

[0069] Table 1

[0070] The passenger car head space evaluation method provided by the application can preliminarily judge whether the head space evaluation value of the vehicle to be evaluated is qualified by measuring a plurality of basic head space parameters of a plurality of benchmark vehicles and setting the pass values of the basic head space parameters, and can intuitively and comprehensively display the head space level of the test vehicle by normalizing the basic head space parameters, weighting and summing the normalized results to obtain the head space evaluation value of the vehicle to be evaluated after judging that the head space evaluation value of the vehicle to be evaluated is qualified.

[0071] As shown in the accompanying drawings Figure 6 The application also provides a passenger car head space evaluation device, which comprises:

[0072] The determining module 601 is configured to determine a whole vehicle coordinate system, and select a plurality of benchmark vehicles according to a category of the vehicle to be evaluated;

[0073] The first calculating module 602 is configured to calculate basic head space parameters of the vehicle to be evaluated and each of the benchmark vehicles based on the established human body model in the whole vehicle coordinate system, wherein the basic head space parameters include one or more of a passenger head space H61, a passenger minimum head space H47, a front windshield head space L38, a passenger vertical head space H46, a passenger side 30° head space W27, a passenger side horizontal head space W35, a passenger side vertical head space H35, and a passenger minimum head space W38.

[0074] The judging module 603 is configured to determine qualified values of each of the basic head space parameters of the vehicle to be evaluated based on each of the basic head space parameters of the benchmark vehicles, and determine whether a head space evaluation value of the vehicle to be evaluated is qualified according to the qualified values of each of the basic head space parameters of the vehicle to be evaluated.

[0075] The second calculating module 604 is configured to, if the head space evaluation value of the vehicle to be evaluated is determined to be qualified, normalize each of the basic head space parameters, and obtain the head space evaluation value of the vehicle to be evaluated by weighted summation of the normalized results.

[0076] In some embodiments, the judging module 603 sets an average value of each of the basic head space parameters of the benchmark vehicles as a qualified value of each of the basic head space parameters, wherein if any of the basic head space parameters of the vehicle to be evaluated is less than the corresponding qualified value, the head space evaluation value of the vehicle to be evaluated is determined to be unqualified, and if each of the basic head space parameters of the vehicle to be evaluated is not less than the corresponding qualified value, the head space evaluation value of the vehicle to be evaluated is determined to be qualified.

[0077] In some embodiments, the second calculating module 604 includes the following steps of normalizing each of the basic head space parameters: obtaining a maximum value and a minimum value of each of the basic head space parameters of the benchmark vehicles, respectively, calculating standardized data of each of the basic head space parameters of the vehicle to be evaluated based on each of the basic head space parameters of the vehicle to be evaluated and the corresponding maximum value and minimum value, and taking the standardized data as a normalized result, wherein a formula used is as follows:

[0078] Hn = (H - H MIN ) / (Hmax - H MIN )

[0079] Hn represents any one basic headroom parameter of the vehicle to be evaluated, Hmax represents the maximum value of the corresponding basic headroom parameter in the reference vehicle, H MIN Hn represents the minimum value of the corresponding basic headroom parameter in the reference vehicle.

[0080] In some embodiments, the second calculation module 604 obtains the headroom evaluation value of the vehicle to be evaluated by weighted sum of the normalized results of each item, including: determining the weight value of each basic headroom parameter of the vehicle to be evaluated; wherein the sum of the weight values of each basic headroom parameter is 1; calculating the headroom evaluation value of the vehicle to be evaluated based on the standardized data of each basic headroom parameter of the vehicle to be evaluated and the corresponding weight value. The formula used is as follows:

[0081] T = A1*Hn61 + A2*Hn47 + A3*Ln38 + A4*Hn46 + A5*Wn27 + A6*Wn35 + A7*Hn35 + A8*Wn38

[0082] Wherein, T represents the headroom evaluation value of the vehicle to be evaluated, A1 represents the weight value of the passenger headroom H61, A2 represents the weight value of the minimum passenger headroom H47, A3 represents the weight value of the front windshield headroom L38, A4 represents the weight value of the passenger vertical headroom H46, A5 represents the weight value of the passenger side 30° headroom W27, A6 represents the weight value of the passenger side horizontal headroom W35, A7 represents the weight value of the passenger side vertical headroom H35, and A8 represents the weight value of the minimum passenger headroom W38.

[0083] In some embodiments, the device further comprises:

[0084] The grade division module is configured to construct a mapping relationship between the headroom evaluation value and the headroom evaluation grade; wherein the headroom evaluation values in different intervals correspond to different headroom evaluation grades; and determine the headroom evaluation grade of the vehicle to be evaluated according to the calculated headroom evaluation value of the vehicle to be evaluated and the mapping relationship.

[0085] The head space evaluation device for passenger cars provided by the application determines the whole vehicle coordinate system through a determination module, and selects a plurality of benchmark vehicles according to the category of the vehicle to be evaluated; the first calculation module calculates the basic head space parameters of the vehicle to be evaluated and each benchmark vehicle based on the established human body model under the whole vehicle coordinate system; the judgment module determines the qualified values of the basic head space parameters of the vehicle to be evaluated based on the basic head space parameters of the benchmark vehicles, and judges whether the head space evaluation value of the vehicle to be evaluated is qualified according to the qualified values of the basic head space parameters of the vehicle to be evaluated; the second calculation module carries out normalization processing on the basic head space parameters of the benchmark vehicles if it is judged that the head space evaluation value of the vehicle to be evaluated is qualified, and obtains the head space evaluation value of the vehicle to be evaluated by weighted summation of the normalization processing results. Thus, the normalization processing is carried out on the selected basic head space parameters, and the head space level of the vehicle can be evaluated intuitively and comprehensively.

[0086] Based on the same concept of the application, the specification attached Figure 7 The electronic device 700 provided by the embodiment of the application includes at least one processor 701, at least one network interface 704 or other user interface 703, a memory 705, and at least one communication bus 702. The communication bus 702 is used to realize the connection and communication between the components. The electronic device 700 can optionally include a user interface 703, including a display (for example, a touch screen, an LCD, a CRT, holographic imaging (Holographic), or a projector, etc.), a keyboard or a clicking device (for example, a mouse, a trackball, a touchpad, or a touch screen, etc.).

[0087] The memory 705 can include a read-only memory and a random access memory, and provides instructions and data for the processor 701. A part of the memory 705 can also include a non-volatile random access memory (NVRAM).

[0088] In some embodiments, the memory 705 stores the following elements, executable modules or data structures, or a subset of them, or an extended set of them:

[0089] The operating system 7051 includes various system programs, used to realize various basic services and process hardware-based tasks;

[0090] The application program module 7052 includes various application programs, for example, a desktop (launcher), a media player (MediaPlayer), a browser (Browser), etc., used to realize various application services.

[0091] In the embodiment of the present application, the processor 701 is configured to execute the steps in the headroom space evaluation method for a passenger vehicle by invoking the program or instructions stored in the memory 705. The headroom space level of the test vehicle can be intuitively and comprehensively displayed by normalizing the parameters.

[0092] The present application also provides a computer readable storage medium having a computer program stored thereon, which, when executed by a processor, performs the steps in the headroom space evaluation method for a passenger vehicle.

[0093] Specifically, the storage medium can be a general storage medium, such as a mobile disk, a hard disk, etc. When the computer program stored in the storage medium is executed, the headroom space evaluation method for a passenger vehicle described above can be performed.

[0094] In the embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other manners. The described device embodiments are merely illustrative. For example, the division of units is only a logical function division, and there can be another division manner in actual implementation. For example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the displayed or discussed mutual couplings or direct couplings or communication connections can be indirect couplings or communication connections through some communication interfaces, and can be electrical, mechanical or other forms.

[0095] The units described as separate components can or can not be physically separate, and the components displayed as units can or can not be physical units, i.e., can be located in one place, or can be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purposes of the embodiments.

[0096] In addition, each functional unit in the embodiments of the present application can be integrated in one processing unit, or each unit can exist physically as a separate unit, or two or more units can be integrated in one unit.

[0097] If the functions are implemented in the form of business function units and sold or used as independent products, they can be stored in a computer readable storage medium. Based on this understanding, the technical solutions of the present application essentially or the part of the prior art that contributes to the present application or part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes a plurality of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the embodiments of the present application. The aforementioned storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a magnetic disk or an optical disk, and various media that can store program codes.

[0098] Finally, it should be noted that: the above embodiments are only specific embodiments of the present application, which are used to illustrate the technical solutions of the present application, but not to limit them. The protection scope of the present application is not limited thereto. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can modify or easily think of changes to the technical solutions described in the foregoing embodiments within the technical scope disclosed by the present application, or replace some technical features with equivalent ones. The modification, change or replacement does not make the corresponding technical solution deviate from the spirit and scope of the technical solutions of the embodiments of the present application. They should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A method for evaluating headroom in passenger vehicles, characterized in that, The method includes the following steps: Determine the vehicle coordinate system and select multiple benchmark vehicles based on the category of the vehicle to be evaluated; In the vehicle coordinate system, the basic head space parameters of the vehicle under evaluation and each of the benchmark vehicles are calculated based on the established human body model; wherein, the basic head space parameters include one or more of the following: occupant head space H61, minimum occupant head space H47, windshield head space L38, vertical occupant head space H46, occupant side 30° head space W27, occupant side horizontal head space W35, occupant side vertical head space H35, and minimum occupant head space W38; Based on the basic headroom parameters of the benchmark vehicles, the pass values ​​for each basic headroom parameter of the vehicle under test are determined, and the pass value of the headroom evaluation value of the vehicle under test is judged according to the pass value of each basic headroom parameter of the vehicle under test. Specifically, the average value of each basic headroom parameter of the benchmark vehicles is set as the pass value for each basic headroom parameter, and the pass value of the headroom evaluation value of the vehicle under test is judged as follows: if any basic headroom parameter of the vehicle under test is less than the corresponding pass value, the headroom evaluation value of the vehicle under test is judged to be unqualified; if each basic headroom parameter of the vehicle under test is not less than the corresponding pass value, the headroom evaluation value of the vehicle under test is judged to be qualified. If the headroom evaluation value of the vehicle under test is deemed qualified, the various basic headroom parameters are normalized, and the weighted sum of the normalization results is used to obtain the headroom evaluation value of the vehicle under test. The normalization of the various basic headroom parameters includes the following steps: obtaining the maximum and minimum values ​​of the various basic headroom parameters of the benchmark vehicle; calculating standardized data of the various basic headroom parameters of the vehicle under test based on the various basic headroom parameters of the vehicle under test, and the corresponding maximum and minimum values, and using this standardized data as the normalization result.

2. The method for evaluating headroom in a passenger vehicle according to claim 1, characterized in that, The standardized data of the basic headroom parameters of the vehicle under evaluation are calculated using the following formula: Hn=(HH MIN ) / ( Hmax-H MIN ) Where H represents any basic headroom parameter of the vehicle under test, and Hmax represents the maximum value of the corresponding basic headroom parameter in the benchmark vehicle. MIN This represents the minimum value of the basic headroom parameter for the corresponding item in the benchmark vehicle.

3. The method for evaluating headroom in a passenger vehicle according to claim 2, characterized in that, The process of obtaining the headroom evaluation value of the vehicle under test by weighted summation of the normalization results includes the following steps: Determine the weight values ​​of each basic headroom parameter of the vehicle to be evaluated; wherein the sum of the weight values ​​of each basic headroom parameter is 1. The headspace evaluation value of the vehicle under test is calculated based on the standardized data of various basic headspace parameters of the vehicle under test and the corresponding weight values.

4. The method for evaluating headroom in a passenger vehicle according to claim 3, characterized in that, The headroom evaluation value of the vehicle under test is calculated using the following formula: T=A1*Hn61+ A2*Hn47+ A3*Ln38+ A4 *Hn46+ A5*Wn27+ A6*Wn35+ A7*Hn35+ A8*Wn38 Wherein, T represents the headroom evaluation value of the vehicle under test, A1 represents the weight value of the occupant headroom H61, A2 represents the weight value of the minimum occupant headroom H47, A3 represents the weight value of the windshield headroom L38, A4 represents the weight value of the occupant vertical headroom H46, A5 represents the weight value of the occupant side 30° headroom W27, A6 represents the weight value of the occupant side horizontal headroom W35, A7 represents the weight value of the occupant side vertical headroom H35, and A8 represents the weight value of the minimum occupant headroom W38.

5. The method for evaluating headroom in a passenger vehicle according to claim 4, characterized in that, The method further includes the following steps: A mapping relationship between head space assessment values ​​and head space assessment levels is established; different head space assessment values ​​in different ranges correspond to different head space assessment levels. Based on the calculated headroom assessment value of the vehicle to be evaluated and the mapping relationship, the headroom assessment level of the vehicle to be evaluated is determined.

6. A device for evaluating headroom in a passenger vehicle, characterized in that, The device includes: The determination module is used to determine the vehicle coordinate system and select multiple benchmark vehicles according to the category of the vehicle to be evaluated; The first calculation module is used to calculate the basic head space parameters of the vehicle under evaluation and each of the benchmark vehicles based on the established human body model in the vehicle coordinate system; wherein, the basic head space parameters include one or more of the following: occupant head space H61, minimum occupant head space H47, windshield head space L38, vertical occupant head space H46, occupant side 30° head space W27, occupant side horizontal head space W35, occupant side vertical head space H35, and minimum occupant head space W38; The judgment module is used to determine the pass values ​​of each basic headspace parameter of the vehicle under test based on the basic headspace parameters of the benchmark vehicle, and to judge whether the headspace evaluation value of the vehicle under test is qualified based on the pass values ​​of each basic headspace parameter of the vehicle under test; wherein, the average value of each basic headspace parameter of the benchmark vehicle is set as the pass value of each basic headspace parameter, and the pass value of the headspace evaluation value of the vehicle under test is judged as follows: if any basic headspace parameter of the vehicle under test is less than the corresponding pass value, the headspace evaluation value of the vehicle under test is judged to be unqualified; if each basic headspace parameter of the vehicle under test is not less than the corresponding pass value, the headspace evaluation value of the vehicle under test is judged to be qualified. The second calculation module is used to, if the headspace evaluation value of the vehicle under test is determined to be qualified, normalize the various basic headspace parameters, and weight and sum the normalization results to obtain the headspace evaluation value of the vehicle under test; wherein, normalizing the various basic headspace parameters includes: obtaining the maximum and minimum values ​​of the various basic headspace parameters of the benchmark vehicle respectively; calculating the standardized data of the various basic headspace parameters of the vehicle under test based on the various basic headspace parameters of the vehicle under test, and the corresponding maximum and minimum values, and using it as the normalization result.

7. An electronic device, characterized in that, include: The device includes a processor, a memory, and a bus. The memory stores machine-readable instructions executable by the processor. When the electronic device is running, the processor communicates with the memory via the bus. When the machine-readable instructions are executed by the processor, the steps of the passenger vehicle headroom assessment method as described in any one of claims 1 to 5 are performed.

8. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, performs the steps of the passenger vehicle headroom assessment method as described in any one of claims 1-5.

Images