Passenger car head space evaluation method, device, equipment and medium

Abstract

The invention provides a passenger car head space evaluation method, device and equipment and a medium, and belongs to the technical field of vehicle man-machine engineering, and the method comprises the steps: determining a whole vehicle coordinate system, and selecting a plurality of benchmarking vehicles according to the type of a to-be-evaluated vehicle; calculating basic head space parameters of the to-be-evaluated vehicle and each benchmarking vehicle based on the established human body model under the whole vehicle coordinate system; on the basis of each basic head space parameter of the benchmarking vehicle, respectively determining a qualified value of each basic head space parameter of the to-be-evaluated vehicle, and judging whether the head space evaluation value of the to-be-evaluated vehicle is qualified or not; and if the vehicle to be evaluated is qualified, performing normalization processing on each basic head space parameter of the benchmarking vehicle, and performing weighted summation on each normalization processing result to obtain a head space evaluation value of the vehicle to be evaluated. Therefore, normalization processing is carried out on the selected basic head space parameters, and the vehicle head space level can be visually and comprehensively evaluated.

Description

Technical Field

[0001] The present application relates to the field of vehicle ergonomics technology, and more specifically, to a method, device, equipment and medium for evaluating the head space of a passenger vehicle. Background Art

[0002] The headroom design of passenger cars is a crucial part of automobile design, which directly affects the riding comfort and safety of passengers. At present, the industry has multiple parameter benchmarks when designing and evaluating the headroom of passenger cars. When a single parameter is selected as a benchmark, the evaluation is likely to be incomplete and unable to accurately reflect the headroom status; when multiple parameters are selected as a benchmark, the headroom level cannot be intuitively reflected. Summary of the invention

[0003] In view of this, 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 various parameters.

[0004] In a first aspect, the present application provides a method for evaluating the headroom of a passenger vehicle, the method comprising the following steps:

[0005] Determine the vehicle coordinate system and select multiple benchmark vehicles according to the type of vehicle to be evaluated;

[0006] In the vehicle coordinate system, basic head space parameters of the vehicle to be evaluated 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 multiple selections of 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;

[0007] Determining qualified values ​​of each basic head space parameter of the vehicle to be evaluated based on each basic head space parameter of the benchmark vehicle, 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;

[0008] If the head space evaluation value of the vehicle to be evaluated is determined to be qualified, various basic head space parameters are normalized, and the weighted sum of various normalization results is performed to obtain the head space evaluation value of the vehicle to be evaluated.

[0009] In a possible implementation manner, the average values ​​of the basic head space parameters of the benchmark vehicle are set as qualified values ​​of the basic head space parameters, and whether the head space evaluation value of the vehicle to be evaluated is qualified is determined in the following manner:

[0010] 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 judged to be unqualified; 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 judged to be qualified.

[0011] In a possible implementation, normalizing each basic head space parameter includes the following steps:

[0012] Respectively obtain the maximum and minimum values ​​of various basic head space parameters of the benchmark vehicle;

[0013] Based on the various basic head space parameters of the vehicle to be evaluated, and the corresponding maximum value and minimum value, standardized data of the various basic head space parameters of the vehicle to be evaluated are calculated and used as the normalization processing result.

[0014] In a possible implementation manner, the standardized data of various basic head space parameters of the vehicle to be evaluated are calculated by the following formula:

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

[0016] 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 of the benchmark vehicle, and H MIN Indicates the minimum value of the corresponding basic head space parameter in the benchmark vehicle.

[0017] In a possible implementation manner, the step of performing weighted summation of the normalization processing results to obtain the headroom evaluation value of the vehicle to be evaluated comprises the following steps:

[0018] Determining weight values ​​of various basic head space parameters of the vehicle to be evaluated; wherein the sum of the weight values ​​of various basic head space parameters is 1;

[0019] The head space evaluation value of the vehicle to be evaluated is calculated based on the standardized data of various basic head space parameters of the vehicle to be evaluated and the corresponding weight values.

[0020] In a possible implementation manner, the headroom evaluation value of the vehicle to be evaluated is calculated by the following formula:

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

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

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

[0024] Construct a mapping relationship between the head space evaluation value and the head space evaluation level; wherein different ranges of head space evaluation values ​​correspond to different head space evaluation levels;

[0025] The head space evaluation level of the vehicle to be evaluated is determined according to the calculated head space evaluation value of the vehicle to be evaluated and the mapping relationship.

[0026] In a second aspect, the present application provides a passenger car headroom evaluation device, the device comprising:

[0027] A 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;

[0028] A first calculation module is used 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 multiple selections of 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;

[0029] A judgment module, used to determine qualified values ​​of various basic head space parameters of the vehicle to be evaluated based on various basic head space parameters of the benchmark vehicle, and to judge whether the head space evaluation value of the vehicle to be evaluated is qualified according to the qualified values ​​of various basic head space parameters of the vehicle to be evaluated;

[0030] The second calculation module is used to normalize various basic head space parameters if it is determined that the head space evaluation value of the vehicle to be evaluated is qualified, and to perform weighted summation of various normalization results to obtain the head space evaluation value of the vehicle to be evaluated.

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

[0032] In a fourth aspect, the present application provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the passenger vehicle head space evaluation method as described in the first aspect are executed.

[0033] The present embodiment provides a passenger car head space evaluation method, device, equipment and medium, which determines the whole vehicle coordinate system, and selects multiple 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 of the benchmark vehicles are calculated based on the established human body model; based on the basic head space parameters of the benchmark vehicles, the qualified values ​​of the basic head space parameters of the vehicle to be evaluated are determined respectively, and according to the qualified values ​​of the basic head space parameters of the vehicle to be evaluated, it is judged whether the head space evaluation value of the vehicle to be evaluated is qualified; if the head space evaluation value of the vehicle to be evaluated is judged to be qualified, the basic head space parameters of the benchmark vehicle are normalized, and the weighted sum of the normalized results is obtained to obtain the head space evaluation value of the vehicle to be evaluated. Therefore, the normalization process is performed on the selected basic head space parameters, and the vehicle head space level can be evaluated intuitively and more comprehensively. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 It is a flowchart of a method for evaluating the headroom of a passenger vehicle in one embodiment of the present application;

[0036] Figure 2Schematic diagram 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 one embodiment of the present application;

[0037] Figure 3 Schematic diagram of the horizontal head space W35 of the passenger side described in one embodiment of the present application;

[0038] Figure 4 Schematic diagram of the occupant's side vertical head space H35 in one embodiment of the present application;

[0039] Figure 5 It is a schematic diagram of the 30° head space W27 on the passenger side described in one embodiment of the present application;

[0040] Figure 6 This is a structural block diagram of a passenger vehicle headroom evaluation device according to an embodiment of the present application;

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

[0042] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. It should be understood that the drawings in the present application only serve the purpose of explanation and description and are not used to limit the scope of protection of the present application. In addition, it should be understood that the schematic drawings are not drawn in real proportion. The flowchart used in this application shows the operations implemented according to some embodiments of the present application. It should be understood that the operations of the flowchart can be implemented out of sequence, and the steps without logical context can be reversed in order or implemented simultaneously. In addition, those skilled in the art can add one or more other operations to the flowchart under the guidance of the content of the present application, or remove one or more operations from the flowchart.

[0043] In addition, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application usually described and marked in the drawings here can be arranged and designed in various 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 application claimed for protection, but merely represents the 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 making creative work belong to 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 existence of the features declared thereafter, but does not exclude the addition of other features.

[0045] Based on the technical problems raised by the background technology, the present application provides 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 various parameters.

[0046] See the instruction manual Figure 1 In one embodiment, the present application provides a method for evaluating the headroom of a passenger vehicle, comprising the following steps:

[0047] S1. Determine the vehicle coordinate system and select multiple benchmark vehicles according to the type of the vehicle to be evaluated;

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

[0049] S3, determining qualified values ​​of each basic head space parameter of the vehicle to be evaluated based on each basic head space parameter of the benchmark vehicle, 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 determined that the head space evaluation value of the vehicle to be evaluated is qualified, each basic head space parameter is normalized, and a weighted sum of each normalization result is performed to obtain the head space evaluation value of the vehicle to be evaluated.

[0051] Specifically, in step S1, first, the definition of the vehicle coordinate system is clarified to ensure that the vehicle model development work is carried out in the same coordinate system. In one embodiment, the vehicle coordinate system is defined with reference to SAEJ182, which covers the specifications and requirements of specific aspects related to automotive engineering. This should be a technical feature well known to those skilled in the art and will not be elaborated here. Secondly, a certain number of benchmark vehicles are selected based on factors such as the model category and price of the vehicle to be evaluated.

[0052] In step S2, before calculating the basic head space parameters of the vehicle to be evaluated and each of the benchmark vehicles, in addition to defining the vehicle coordinate system, it is also necessary to establish a human body model according to the type of vehicle to be evaluated, that is, confirm the type of dummy template (most companies currently choose the SAE 95% male human body template), and determine the front and second row dummy layout reference points SgRP (R point) according to the human body layout specification. Then, based on the established human body model, door data, ceiling data and other conditions, the basic head space data is obtained. The basic head space data selected in this application include one or more of the occupant head space H61, the occupant minimum head space H47, the front windshield head space L38, the occupant vertical head space H46, the occupant side 30° head space W27, the occupant side horizontal head space W35, the occupant side vertical head space H35, and the occupant minimum head space W38.

[0053] For details, see the attached manual. Figure 2 , measure the occupant head space H61, the minimum occupant head space H47, the windshield head space L38 and the occupant vertical head space H46 in the following way: make a plane CL through point R and parallel to the XZ plane, make a straight line through point R and backward at an angle of 8° to the vertical direction in the CL plane, and intersect with the ceiling. The length of the straight line segment plus 102mm is the occupant head space H61; make a plane CL through point R and parallel to the XZ plane, and the minimum distance between the head profile envelope and the ceiling in the CL plane is the occupant minimum head space H47; make a plane CL through point R of the first row and parallel to the XZ plane, and make a horizontal line tangent to the ceiling in the CL plane, and the distance from the tangent point to the head profile envelope is the windshield head space L38; make a plane CL through point R and parallel to the XZ plane, and move the head profile envelope vertically upward in the CL plane and make it tangent to the ceiling. The vertical distance moved is the occupant vertical head space H46;

[0054] See the instruction manual Figure 3 , the horizontal head room W35 of the occupant's side is measured in the following way: draw a plane CM parallel to the YZ plane through the highest point of the head envelope in the Z direction, move the head envelope to the left horizontally in the CM plane until it is tangent to the ceiling, and the horizontal movement distance is the horizontal head room W35 of the occupant's side;

[0055] See the instruction manual Figure 4 , the occupant's side vertical head space H35 is measured in the following way: a plane CM is made through the highest point of the head envelope in the Z direction and is parallel to the YZ plane. The head envelope is moved vertically in the CM plane until it is tangent to the ceiling. The vertical movement distance is the occupant's side vertical head space H35;

[0056] See the instruction manual Figure 5, the 30° head space W27 on the passenger side is measured in the following way: draw a plane CM parallel to the YZ plane through the highest point of the head envelope in the Z direction, draw a straight line through the center point of the head envelope in the CM plane, which is 30° to the horizontal line, and a horizontal line tangent to the ceiling. The head envelope moves along this straight line until it is tangent to the ceiling. The distance between the two center points of the head envelope on the straight line is the 30° head space W27 on the passenger side;

[0057] And the minimum head room W38 of the occupant is measured in the following way: the minimum gap between the head contour envelope surface and the interior trim in the 3D data is the minimum head room W38 of the occupant.

[0058] In step S3, first, a qualified value is set for each basic head space parameter of the vehicle to be evaluated based on the measured basic head space parameters of the benchmark vehicle. If any basic head space parameter 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 judged to be unqualified; if each basic head space parameter 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 judged to be qualified.

[0059] In one embodiment, the average value of each basic head space parameter of the benchmark vehicle is set as the qualified value of each basic head space parameter. For example, by measuring the basic head space parameters of multiple benchmark vehicles, the average value of the occupant head space H61 is X1, the average value of the occupant minimum head space H47 is X2, the average value of the front windshield head space L38 is X3, the average value of the occupant vertical head space H46 is X4, the average value of the occupant side 30° head space W27 is X5, the average value of the occupant side horizontal head space W35 is X6, the average value of the occupant side vertical head space H35 is X7, and the average value of the occupant minimum head space W38 is X8. By measuring the basic head space parameters of the vehicle to be evaluated, the average value of the occupant head space H61 is Y1, the average value of the occupant minimum head space H47 is X2, and the average value of the occupant head space W46 is X8. The average value of the front windshield head space L38 is Y2, the average value of the occupant's vertical head space H46 is Y4, the average value of the occupant's side 30° head space W27 is Y5, the average value of the occupant's side horizontal head space W35 is Y6, the average value of the occupant's side vertical head space H35 is Y7, and the average value of the occupant's minimum head space W38 is Y8. If Y1~Y8 are all greater than or equal to the corresponding X1~X8, then the head space evaluation value of the vehicle to be evaluated is judged to be qualified; if Y1~Y8 are not greater than or equal to the corresponding X1~X8, that is, if any value in Y1~Y8 is less than the corresponding X1~X8, then it is directly judged that the head space evaluation value of the vehicle to be evaluated is unqualified and the design is poor.

[0060] In step S4, for vehicles that are judged to have qualified head space evaluation values, it is necessary to further determine their head space evaluation values, so as to intuitively and comprehensively display the head space level of the vehicle to be evaluated. Specifically, first obtain the maximum and minimum values ​​of the various basic head space parameters of the benchmark vehicle, and then calculate the standardized data of the various basic head space parameters of the vehicle to be evaluated based on the various basic head space parameters of the vehicle to be evaluated, and the corresponding maximum and minimum values, and use them as the normalization result. In one embodiment, the standardized data of the various basic head space parameters of the vehicle to be evaluated are calculated by the following formula, Hn=(HH 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 occupant head space H61 is normalized to obtain the corresponding standardized data Hn61=(HH MIN ) / (Hmax-H MIN ), where Hn61 represents the standardized data of the occupant headroom H61, H represents the measured data of the occupant headroom H61 of the vehicle to be evaluated, Hmax and H MIN The maximum value and the minimum value in the measurement data of the occupant headroom H61 of the plurality of reference vehicles are shown.

[0062] After obtaining the standardized data of each basic head space parameter, the weight values ​​of each basic head space parameter of the vehicle to be evaluated are determined; wherein the sum of the weight values ​​of each basic head space parameter is 1; the head space evaluation value of the vehicle to be evaluated is calculated based on the standardized data of each basic head space parameter of the vehicle to be evaluated and the corresponding weight values. In one 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] Among them, T represents the head space evaluation value of the vehicle to be evaluated, A1 represents the weight value of the occupant head space H61, A2 represents the weight value of the occupant minimum head space H47, A3 represents the weight value of the front windshield head space L38, A4 represents the weight value of the occupant vertical head space H46, A5 represents the weight value of the occupant side 30° head space W27, A6 represents the weight value of the occupant side horizontal head space W35, A7 represents the weight value of the occupant side vertical head space H35, A8 represents the weight value of the occupant minimum head space W38.

[0065] Among them, the weight value is related to the emphasis of the evaluation. For example, when more attention is paid to the subjective feelings of the occupants, the weight values ​​of the occupant's minimum head space H47, the front windshield head space L38, the occupant's vertical head space H46, the occupant's side 30° head space W27 and the occupant's side horizontal head space W35 can be appropriately increased.

[0066] Furthermore, the present application also constructs a mapping relationship between head space evaluation values ​​and head space evaluation levels; wherein head space evaluation values ​​in different intervals correspond to different head space evaluation levels; and the head space evaluation level of the vehicle to be evaluated is determined based on the calculated head space evaluation value of the vehicle to be evaluated and the mapping relationship.

[0067] In one embodiment, the mapping relationship between the pre-constructed head space evaluation values ​​and the head space evaluation levels is shown in Table 1, wherein the head space evaluation levels include excellent, good, and passing, and the head space evaluation value interval corresponding to the excellent head space evaluation level is [90, 100]; the head space evaluation value interval corresponding to the good head space evaluation level is [75, 90]; and the head space evaluation value interval corresponding to the passing head space evaluation level is [60, 75].

[0068] grade Fraction excellent [90,100] good [75,90) middle [60,75)

[0069] Table 1

[0070] The present application provides a passenger car head space evaluation method, which measures multiple basic head space parameters of multiple benchmark vehicles and sets passing values ​​for each basic head space parameter to preliminarily determine whether the head space evaluation value of the vehicle to be evaluated is qualified; and after determining that the head space evaluation value of the vehicle to be evaluated is qualified, normalize each basic head space parameter, and weightedly sum each normalization result to obtain the head space evaluation value of the vehicle to be evaluated, thereby intuitively and comprehensively displaying the head space level of the test vehicle.

[0071] As the instruction manual Figure 6 As shown, the present application also provides a passenger car head space evaluation device, the device comprising:

[0072] The determination module 601 is used to determine the whole vehicle coordinate system and select multiple benchmark vehicles according to the category of the vehicle to be evaluated;

[0073] The first calculation module 602 is used 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 occupant head space H61, the occupant minimum head space H47, the front windshield head space L38, the occupant vertical head space H46, the occupant side 30° head space W27, the occupant side horizontal head space W35, the occupant side vertical head space H35, and the occupant minimum head space W38;

[0074] A judgment module 603 is used 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 vehicle, and to judge 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;

[0075] The second calculation module 604 is used to normalize various basic head space parameters if it is determined that the head space evaluation value of the vehicle to be evaluated is qualified, and to perform weighted summation of various normalization results to obtain the head space evaluation value of the vehicle to be evaluated.

[0076] In some embodiments, the judgment module 603 sets the average value of each basic head space parameter of the benchmark vehicle as the qualified value of each basic head space parameter, wherein, if any basic head space parameter 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 judged to be unqualified; if each basic head space parameter 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 judged to be qualified.

[0077] In some embodiments, the second calculation module 604 normalizes the basic head space parameters, including: respectively obtaining the maximum value and the minimum value of the basic head space parameters of the benchmark vehicle, and calculating the standardized data of the basic head space parameters of the vehicle to be evaluated based on the basic head space parameters of the vehicle to be evaluated and the corresponding maximum value and the minimum value, and using the standardized data as the normalization result, wherein the formula used is as follows:

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

[0079] Wherein, Hn represents any basic head space parameter of the vehicle to be evaluated, Hmax represents the maximum value of the corresponding basic head space parameter of the benchmark vehicle, and H MIN Indicates the minimum value of the corresponding basic head space parameter in the benchmark vehicle.

[0080] In some embodiments, the second calculation module 604 performs weighted summation of the normalized processing results to obtain the head space evaluation value of the vehicle to be evaluated, including: determining the weight values ​​of the basic head space parameters of the vehicle to be evaluated; wherein the sum of the weight values ​​of the basic head space parameters is 1; and calculating the head space evaluation value of the vehicle to be evaluated based on the standardized data of the basic head space parameters of the vehicle to be evaluated and the corresponding weight values. 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] Among them, T represents the head space evaluation value of the vehicle to be evaluated, A1 represents the weight value of the occupant head space H61, A2 represents the weight value of the occupant minimum head space H47, A3 represents the weight value of the front windshield head space L38, A4 represents the weight value of the occupant vertical head space H46, A5 represents the weight value of the occupant side 30° head space W27, A6 represents the weight value of the occupant side horizontal head space W35, A7 represents the weight value of the occupant side vertical head space H35, A8 represents the weight value of the occupant minimum head space W38.

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

[0084] A grade classification module is used to construct a mapping relationship between head space evaluation values ​​and head space evaluation levels; wherein head space evaluation values ​​in different intervals correspond to different head space evaluation levels; and the head space evaluation level of the vehicle to be evaluated is determined based on the calculated head space evaluation value of the vehicle to be evaluated and the mapping relationship.

[0085] The head space evaluation device for a passenger car provided by the present application determines the whole vehicle coordinate system through a determination module, and selects multiple benchmark vehicles according to the category of the vehicle to be evaluated; the basic head space parameters of the vehicle to be evaluated and each of the benchmark vehicles are calculated by a first calculation module based on the established human body model in the whole vehicle coordinate system; the qualified values ​​of the basic head space parameters of the vehicle to be evaluated are determined by a judgment module based on the basic head space parameters of the benchmark vehicles, and the head space evaluation value of the vehicle to be evaluated is judged to be qualified 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 judged to be qualified by a second calculation module, the basic head space parameters of the benchmark vehicle are normalized, and the weighted sum of the normalized results is obtained to obtain the head space evaluation value of the vehicle to be evaluated. Therefore, the normalization process is performed on the selected basic head space parameters, so that the vehicle head space level can be evaluated intuitively and more comprehensively.

[0086] Based on the same concept of the present invention, the specification is attached Figure 7 As shown, the structure of an electronic device 700 provided in an embodiment of the present 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 these components. The electronic device 700 optionally includes a user interface 703, including a display (for example, a touch screen, LCD, CRT, holographic imaging (Holographic) or projection (Projector), etc.), a keyboard or a pointing device (for example, a mouse, a trackball (trackball), a touch pad or a touch screen, etc.).

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

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

[0089] Operating system 7051, including various system programs for implementing various basic services and processing hardware-based tasks;

[0090] The application module 7052 includes various application programs, such as a launcher, a media player, a browser, etc., which are used to implement various application services.

[0091] In an embodiment of the present application, by calling a program or instruction stored in the memory 705, the processor 701 is used to execute steps in a passenger car head space evaluation method, which can intuitively and comprehensively display the head space level of the test vehicle by normalizing each parameter.

[0092] The present application also provides a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the steps in the passenger vehicle head space evaluation method are executed.

[0093] Specifically, the storage medium can be a general storage medium, such as a mobile disk, a hard disk, etc. When the computer program on the storage medium is run, the above-mentioned passenger car head space evaluation method can be executed.

[0094] In the embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some communication interfaces, and the indirect coupling or communication connection of devices or units can be electrical, mechanical or other forms.

[0095] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0096] In addition, each functional unit in the embodiments provided in the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

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

[0098] Finally, it should be noted that the above embodiments are only specific implementation methods of the present application, which are used to illustrate the technical solutions of the present application, rather than to limit them. The protection scope of the present application is not limited thereto. Although the present application is described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that any technician familiar with the technical field can still modify the technical solutions recorded in the aforementioned embodiments within the technical scope disclosed in the present application, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application. They should all be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A method for evaluating the headroom of a passenger vehicle, characterized in that: The method comprises the following steps: Determine the vehicle coordinate system and select multiple benchmark vehicles according to the type of vehicle to be evaluated; In the vehicle coordinate system, basic head space parameters of the vehicle to be evaluated 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 occupant head space H61, the occupant minimum head space H47, the front windshield head space L38, the occupant vertical head space H46, the occupant side 30° head space W27, the occupant side horizontal head space W35, the occupant side vertical head space H35, and the occupant minimum head space W38; Determining qualified values ​​of each basic head space parameter of the vehicle to be evaluated based on each basic head space parameter of the benchmark vehicle, 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; If the head space evaluation value of the vehicle to be evaluated is determined to be qualified, various basic head space parameters are normalized, and the weighted sum of various normalization results is performed to obtain the head space evaluation value of the vehicle to be evaluated.

2. A passenger car headroom evaluation method according to claim 1, characterized in that: in, The average values ​​of the basic head space parameters of the benchmark vehicle are set as qualified values ​​of the basic head space parameters, and whether the head space evaluation value of the vehicle to be evaluated is qualified is determined in the following manner: 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 judged to be unqualified; 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 judged to be qualified.

3. A passenger car headroom evaluation method according to claim 2, characterized in that: The normalization of various basic head space parameters includes the following steps: Respectively obtain the maximum and minimum values ​​of various basic head space parameters of the benchmark vehicle; Based on the various basic head space parameters of the vehicle to be evaluated, and the corresponding maximum value and minimum value, standardized data of the various basic head space parameters of the vehicle to be evaluated are calculated and used as the normalization processing result.

4. A passenger car headroom evaluation method according to claim 3, characterized in that: The standardized data of various basic headroom parameters of the vehicle to be evaluated are calculated by the following formula: Hn=(HH 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 of the benchmark vehicle, and H MIN Indicates the minimum value of the corresponding basic head space parameter in the benchmark vehicle.

5. A passenger car headroom evaluation method according to claim 4, characterized in that: The step of weighting and summing the normalization results to obtain the headroom evaluation value of the vehicle to be evaluated comprises the following steps: Determining weight values ​​of various basic head space parameters of the vehicle to be evaluated; wherein the sum of the weight values ​​of various basic head space parameters is 1; The head space evaluation value of the vehicle to be evaluated is calculated based on the standardized data of various basic head space parameters of the vehicle to be evaluated and the corresponding weight values.

6. A passenger car headroom evaluation method according to claim 5, characterized in that: The headroom evaluation value of the vehicle to be evaluated is calculated by the following formula: T=A1*Hn61+A2*Hn47+A3*Ln38+A4*Hn46+A5*Wn27+A6*Wn35+A7*Hn35+A8*Wn38 Among them, T represents the head space evaluation value of the vehicle to be evaluated, A1 represents the weight value of the occupant head space H61, A2 represents the weight value of the occupant minimum head space H47, A3 represents the weight value of the front windshield head space L38, A4 represents the weight value of the occupant vertical head space H46, A5 represents the weight value of the occupant side 30° head space W27, A6 represents the weight value of the occupant side horizontal head space W35, A7 represents the weight value of the occupant side vertical head space H35, A8 represents the weight value of the occupant minimum head space W38.

7. A passenger car headroom evaluation method according to claim 6, characterized in that: The method further comprises the following steps: Construct a mapping relationship between the head space evaluation value and the head space evaluation level; wherein different ranges of head space evaluation values ​​correspond to different head space evaluation levels; The head space evaluation level of the vehicle to be evaluated is determined according to the calculated head space evaluation value of the vehicle to be evaluated and the mapping relationship.

8. A passenger car headroom evaluation device, characterized in that: The device comprises: A determination module is used to determine the coordinate system of the entire vehicle and select multiple benchmark vehicles according to the category of the vehicle to be evaluated; A first calculation module is used 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 occupant head space H61, the occupant minimum head space H47, the front windshield head space L38, the occupant vertical head space H46, the occupant side 30° head space W27, the occupant side horizontal head space W35, the occupant side vertical head space H35, and the occupant minimum head space W38; A judgment module, used to determine qualified values ​​of various basic head space parameters of the vehicle to be evaluated based on various basic head space parameters of the benchmark vehicle, and to judge whether the head space evaluation value of the vehicle to be evaluated is qualified according to the qualified values ​​of various basic head space parameters of the vehicle to be evaluated; The second calculation module is used to normalize various basic head space parameters if it is determined that the head space evaluation value of the vehicle to be evaluated is qualified, and to perform weighted summation of various normalization results to obtain the head space evaluation value of the vehicle to be evaluated.

9. An electronic device, characterized in that: include: A processor, a memory and a bus, wherein the memory stores machine-readable instructions executable by the processor. When the electronic device is running, the processor and the memory communicate via the bus. When the machine-readable instructions are executed by the processor, the steps of the passenger car head space evaluation method as described in any one of claims 1 to 7 are performed.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the passenger vehicle head space evaluation method as described in any one of claims 1-7 are executed.

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