Vehicle wiper system forward arrangement verification method and system based on user perception

Abstract

The present invention discloses a forward arrangement verification method and system for a vehicle wiper system based on user perception, the method comprising the following steps: obtaining a wiper perception field of view; obtaining boundary information of a main wiper; obtaining boundary information of an auxiliary wiper; obtaining a wiper shaft direction that satisfies both a wiper attack angle and a lift angle; obtaining the position of a wiper motor output shaft and a driving structure of a wiper transmission assembly; obtaining a verified vehicle wiper according to the obtained wiper perception field of view, boundary information of the main wiper, boundary information of an auxiliary wiper, a wiper shaft direction that satisfies both a wiper attack angle and a lift angle, and the position of a wiper motor output shaft and a driving structure of a wiper transmission assembly. The present application can directly complete the arrangement of the wiper system without repeated adjustments, thus avoiding repetitive verification work and improving the processing and design work efficiency of the wiper system.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle wiper system design, and in particular to a vehicle wiper system forward arrangement verification method and system based on user perception. Background Art

[0002] The traditional method for calibrating the layout of a vehicle wiper system is to first assume the position of the wiper output shaft and wiper blade, then determine the wiping area, and calibrate parameters such as the attack angle and lift angle. Since the attack angle and lift angle are strongly related to the position and angle of the output shaft, and the initial position and angle of the wiper shaft usually have large deviations, the actual calibration process requires constant adjustment and trial, which is a cumbersome process. For a version of environmental parts data, the wiper system structure needs to be adjusted, calibrated, and adjusted again. After several rounds of repeated calibration and adjustment, our design requirements can be fully met. In addition, environmental parts related to wipers, such as windshields, hoods, A-pillars, etc., change very quickly during the styling stage. Each change will lead to partial or even complete changes to the wiper mechanism, and there are many repetitive tasks, resulting in low work efficiency and low layout accuracy. At the same time, the traditional layout method ignores the consideration of the user perception level, which will also lead to many problems of poor vision after the physical installation, which will lead to a large amount of changes to the wiper system in the later stage, with high costs and cycle costs. Summary of the invention

[0003] The purpose of the present invention is to overcome the deficiencies of the above-mentioned background technology and to provide a vehicle wiper system forward arrangement verification method and system based on user perception.

[0004] In a first aspect, the present application provides a method for positive arrangement verification of a vehicle wiper system based on user perception, comprising the following steps:

[0005] Get the wiper sensing vision line;

[0006] Get the boundary information of the main wiper;

[0007] Get the boundary information of the auxiliary wiper;

[0008] Obtain the wiper axis direction that satisfies both the wiper attack angle and the lift angle;

[0009] Obtain the position of the wiper motor output shaft and the drive structure of the wiper transmission assembly;

[0010] The verified vehicle wiper is obtained based on the acquired wiper sensing field of view, the boundary information of the main wiper, the boundary information of the auxiliary wiper, the wiper shaft direction that satisfies both the wiper attack angle and the lift angle, the position of the wiper motor output shaft and the driving structure of the wiper transmission assembly.

[0011] According to a first possible implementation manner of the first aspect, in the first possible implementation manner of the first aspect, the step of “obtaining a wiper sensed field of view” specifically includes the following steps:

[0012] Obtain the driver's lower field of view;

[0013] Offset the lower field of view downward by the wiper blade height to obtain the wiper sensing field of view line.

[0014] According to the first possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, the step of “obtaining boundary information of the main wiper” specifically includes the following steps:

[0015] According to the length of the main wiper blade and the limit position constraint condition of the main wiper blade, the upper stop point and the lower stop point of the main wiper blade are obtained, and according to the upper stop point and the lower stop point of the main wiper blade, the line where the limit position of the main wiper blade is located is obtained;

[0016] Determine the line where the initial parking position of the main scraper blade is located;

[0017] Obtain a point on the main scraper axis according to the line where the main scraper blade's limit position is located and the line where the initial position is located;

[0018] The upper and lower dead points of the main scraper blade are rotated about a point on the main scraper shaft to form two arcs, which intersect with the line where the initial position of the main scraper blade is located to form the wiping area of ​​the main wiper, and the position of the main scraper shaft is obtained according to the constraint conditions of the main scraper shaft.

[0019] According to the first possible implementation manner of the first aspect, in a third possible implementation manner of the first aspect, the step of “obtaining auxiliary wiper wiping area boundary information” specifically includes the following steps:

[0020] According to the length of the auxiliary scraper blade and the constraint conditions of the auxiliary scraper blade, an initial position of the auxiliary scraper blade is obtained;

[0021] Draw a circle with the main scraper axis as the center and the distance between the two scraper axes as the radius, select a point on the circle as the auxiliary scraper axis, and rotate around the auxiliary scraper axis with the two end points of the initial stop position of the auxiliary scraper blade to obtain the auxiliary scraping area;

[0022] The position of the auxiliary scraper shaft is obtained according to the auxiliary scraper brush area and the constraints of the auxiliary scraper shaft.

[0023] According to the first possible implementation manner of the first aspect, in a fourth possible implementation manner of the first aspect, the step of “obtaining a wiper axis direction that satisfies both the wiper attack angle and the lift angle” specifically includes the following steps:

[0024] Establishing the curves of the wiper wiping angle and the wiper attack angle as well as the wiper wiping angle and the wiper lift angle;

[0025] According to the constraints of the wiper attack angle and the wiper lift angle, as well as the curves of the wiping angle and the wiper attack angle and the wiper lift angle, the wiper axis direction that satisfies both the wiper attack angle and the wiper lift angle is obtained.

[0026] According to the first possible implementation manner of the first aspect, in a fifth possible implementation manner of the first aspect, the step of “obtaining the position of the wiper motor output shaft and the driving structure of the wiper transmission assembly” specifically includes the following steps:

[0027] Determine the position of the wiper motor output shaft according to the structure of the water trough;

[0028] The driving structure of the wiper transmission assembly is determined according to the structure of the surrounding sheet metal and the position of the wiper shaft. The driving forms of the wiper transmission assembly include dual motors driving the main wiper and the auxiliary wiper respectively and a single motor driving the main wiper and the auxiliary wiper.

[0029] According to the first possible implementation manner of the first aspect, in a sixth possible implementation manner of the first aspect, the step of “obtaining a verified vehicle wiper according to the acquired wiper sensing field of view, the boundary information of the main wiper, the boundary information of the auxiliary wiper, the wiper shaft direction that satisfies the wiper attack angle and the lift angle, the position of the wiper motor output shaft, and the driving structure of the wiper transmission assembly” specifically includes the following steps:

[0030] According to the position of the main scraping shaft and the position of the auxiliary scraping shaft, the lengths of the two wiper rocker arms and the connecting rod that meet the scraping angle requirements are obtained;

[0031] The dimensions of the planar four-link are converted into a spatial four-link structure to obtain the calibrated vehicle wiper.

[0032] In a second aspect, the present application provides a vehicle wiper system forward arrangement verification system based on user perception, comprising:

[0033] A first acquisition module is used to acquire the wiper sensing field of view;

[0034] A second acquisition module is used to acquire boundary information of the main wiper;

[0035] A third acquisition module is used to obtain boundary information of the auxiliary wiper;

[0036] A fourth acquisition module, used to acquire a wiper axis direction that satisfies both a wiper attack angle and a lift angle;

[0037] A fifth acquisition module, used to acquire the position of the wiper motor output shaft and the driving structure of the wiper transmission assembly;

[0038] The wiper acquisition control module is used to obtain the verified vehicle wiper according to the acquired wiper sensing field of view, the boundary information of the main wiper, the boundary information of the auxiliary wiper, the wiper shaft direction that satisfies the wiper attack angle and the lift angle, the position of the wiper motor output shaft and the driving structure of the wiper transmission assembly.

[0039] According to the second aspect, in a first possible implementation manner of the second aspect, the first acquisition module includes:

[0040] A lower visual field acquisition submodule, used to acquire the driver's lower visual field;

[0041] The wiper sensing vision line acquisition submodule is communicatively connected with the lower vision surface acquisition submodule and is used for shifting the lower vision surface downward by the wiper blade height to acquire the wiper sensing vision line.

[0042] In a third aspect, the present application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements all the method steps of the vehicle wiper system forward arrangement verification method and system based on user perception as described above.

[0043] Compared with the prior art, the advantages of the present invention are as follows:

[0044] The user-perception-based forward layout verification method for a vehicle wiper system provided in the present application first determines the boundary information of the main wiper area and the auxiliary wiper area to reduce the design freedom of the wiper system, and then selects the wiper shaft position that meets the design requirements according to the design requirements of the wiper area. In this way, the layout of the wiper system can be completed directly without repeated adjustments, thereby avoiding repetitive verification work and improving the processing and design efficiency of the wiper system. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 is a method flow chart of a vehicle wiper system forward arrangement verification method based on user perception provided by the present application;

[0046] Figure 2 It is a schematic diagram of the wiper sensing field of view in the vehicle wiper system forward arrangement verification method based on user perception provided by the present application;

[0047] Figure 3 It is a schematic diagram of the wiper shaft position in the forward arrangement verification method of the vehicle wiper system based on user perception provided by the present application;

[0048] Figure 4 It is a schematic diagram of drawing the AB line in the forward arrangement verification method of the vehicle wiper system based on user perception provided by the present application;

[0049] Figure 5is a schematic diagram of the AC line in the forward arrangement verification method of the vehicle wiper system based on user perception provided by the present application;

[0050] Figure 6 It is a schematic diagram of the attack angle and the lift angle in the forward arrangement verification method of the vehicle wiper system based on user perception provided by the present application;

[0051] Figure 7 is a schematic diagram of the radius r in the forward arrangement verification method of the vehicle wiper system based on user perception provided by the present application;

[0052] Figure 8 is a schematic diagram of the arc length α in the forward arrangement verification method of the vehicle wiper system based on user perception provided by the present application;

[0053] Fig. 9 is a schematic diagram of the attack angle in the forward arrangement verification method of the vehicle wiper system based on user perception provided by the present application;

[0054] Fig.10 A schematic diagram of the lift angle in the forward arrangement verification method of a vehicle wiper system based on user perception provided in the present application;

[0055] Fig.11 A schematic diagram of the water trough structure in the forward arrangement verification method of the vehicle wiper system based on user perception provided in this application;

[0056] Fig.12 A schematic diagram of determining the output shaft position according to the water trough structure in the forward arrangement verification method of the vehicle wiper system based on user perception provided by the present application;

[0057] Fig.13 A schematic diagram of a computer program interface stored on a computer-readable storage medium in the vehicle wiper system forward arrangement verification method based on user perception provided in the present application. DETAILED DESCRIPTION

[0058] Reference will now be made in detail to specific embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Although the present invention will be described in conjunction with specific embodiments, it will be understood that it is not intended to limit the present invention to the embodiments described. On the contrary, it is intended to cover changes, modifications and equivalents included in the spirit and scope of the present invention as defined by the appended claims. It should be noted that the method steps described herein can all be implemented by any functional block or functional arrangement, and any functional block or functional arrangement can be implemented as a physical entity or a logical entity, or a combination of the two.

[0059] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0060] Note: The example to be introduced below is only a specific example, and is not intended to limit the embodiments of the present invention to the following specific steps, values, conditions, data, sequences, etc. Those skilled in the art can apply the concept of the present invention to construct more embodiments not mentioned in this specification by reading this specification.

[0061] The existing wiper system needs to be repeatedly checked and the structural design needs to be changed. There is a lot of repetitive work, which leads to low work efficiency and low layout accuracy. At the same time, the layout method of the wiper system ignores the consideration of the user's perception level, which will also lead to poor vision after the actual installation.

[0062] In view of this, the present application provides a forward layout verification method for a vehicle wiper system based on user perception, which effectively solves the technical problems of the existing wiper system design, such as the need for repeated verification, low work efficiency, low layout accuracy, and failure to consider the user perception level.

[0063] See also Figure 1 As shown, an embodiment of the present invention provides a vehicle wiper system forward arrangement verification method based on user perception, comprising the following steps:

[0064] Step S1, obtaining the wiper sensing field of view;

[0065] Step S2, obtaining boundary information of the main wiper;

[0066] Step S3, obtaining boundary information of the auxiliary wiper;

[0067] Step S4, obtaining the wiper axis direction that satisfies both the wiper attack angle and the lift angle;

[0068] Step S5, obtaining the position of the wiper motor output shaft and the driving structure of the wiper transmission assembly;

[0069] Step S6, obtaining the verified vehicle wiper according to the acquired wiper sensing field of view, the boundary information of the main wiper, the boundary information of the auxiliary wiper, the wiper shaft direction that satisfies the wiper attack angle and the lift angle, the position of the wiper motor output shaft and the driving structure of the wiper transmission assembly.

[0070] The user-perception-based forward layout verification method for a vehicle wiper system provided in the present application first determines the boundary information of the main wiper area and the auxiliary wiper area to reduce the design freedom of the wiper system, and then selects the wiper shaft position that meets the design requirements according to the design requirements of the wiper area. In this way, the layout of the wiper system can be completed directly without repeated adjustments, thereby avoiding repetitive verification work and improving the processing and design efficiency of the wiper system.

[0071] In one embodiment, if Figure 2As shown, the step of "step S1, obtaining the wiper sensing vision line" specifically includes the following steps:

[0072] Obtain the driver's lower field of view;

[0073] Offset the lower field of view downward by the wiper blade height to obtain the wiper sensing field of view line.

[0074] In a more specific embodiment, in order to ensure that the person sitting in the cab cannot see anything below the wiper vision line, the step of "obtaining the wiper sensing vision line" specifically includes the following steps:

[0075] Draw a straight line in the Y direction through point V1, the eye point of the driver specified in the legal field of vision. The length is determined according to the width of the glass to draw the driver's lower field of vision.

[0076] Extract the lower edge of the black side of the glass;

[0077] Use the bridge command in CATIA to create a curved surface formed by these two lines as the driver's lower field of vision;

[0078] The lower viewing surface is offset downward by the height of the wiper blade. The intersection line of the downwardly offset lower viewing surface and the glass wool is the wiper viewing line. The wiper system designed based on this wiper viewing line will not occupy or affect the forward field of view in the cab below the wiper viewing line, and the user perception experience will be better.

[0079] In one embodiment, the boundary information of the main scraper shaft includes the upper and lower dead points of the extreme positions of the main scraper blade, the initial position of the main scraper blade, the main scraper area, and the main scraper shaft position. The step of "step S2, obtaining the boundary information of the main wiper" specifically includes the following steps:

[0080] Step S21, obtaining the upper and lower stop points of the main wiper blade according to the length of the main wiper blade and the limit position constraint condition of the main wiper blade, and obtaining the line where the limit position of the main wiper blade is located according to the upper and lower stop points of the main wiper blade;

[0081] Step S22, determining the line where the initial parking position of the main scraper blade is located;

[0082] Step S23, obtaining a point on the main scraper axis according to the line where the limit position of the main scraper blade is located and the line where the initial position is located;

[0083] Step S24: The upper and lower dead points of the main scraper blade are rotated about a point on the main scraper shaft to form two arcs, and the two arcs intersect with the line where the initial position of the main scraper blade is located to form the scraping area of ​​the main wiper. The position of the main scraper shaft is obtained according to the constraint conditions of the main scraper shaft as shown in the following table:

[0084]

[0085] As mentioned above, the main scraping and wiping area is designed to fully consider the driver's left front perception field of view and the parallelism of the scraping line and the A-pillar to ensure aesthetics.

[0086] In one embodiment, the step of "obtaining the upper and lower stop points of the main wiper blade according to the length of the main wiper blade and the limit position constraint of the main wiper blade, and obtaining the line where the limit position of the main wiper blade is located according to the upper and lower stop points of the main wiper blade" specifically includes the following steps:

[0087] The limit position constraints of the main scraper are as follows:

[0088]

[0089] Among them, the A-pillar is the side edge of the car windshield where the main wiper is located.

[0090] According to the above-mentioned limit position constraint conditions of the main wiper blade and the length of the main wiper blade, the upper stop point of the main wiper limit position and the lower stop point of the main wiper limit position are obtained.

[0091] As described above, according to the present application, based on the above-mentioned limit position constraints of the main wiper blade and the length of the main wiper blade, the spatial design range or freedom of the upper stop point of the main wiper limit position and the lower stop point of the main wiper limit position are reduced.

[0092] In one embodiment, the step of "determining the line where the initial stop position of the main scraper blade is located" specifically includes the following steps:

[0093] The tangent of the wiper vision line is made, and the tangent of the wiper vision line is as flush as possible with the left and right directions of the vehicle body, that is, α in the figure is as close to 0° as possible, and is controlled between -5 and 5°. The tangent of the wiper vision line is used as the line of the initial parking position. The main wiper blade is parked at this position to ensure that the driver and others sitting in the cab cannot see the wiper blade. The parking position of the wiper blade is as flat as possible to prevent the wiper blade from having one end higher than the other. In this step, only the line where the main wiper blade is parked is determined, and the specific positions of the two ends of the main wiper blade when the main wiper blade is in the parking position are not determined.

[0094] In one embodiment, in order to determine the position of the main scraper shaft, the step of "obtaining a point on the main scraper shaft according to the line where the limit position of the main scraper blade is located and the line where the initial position is located" specifically includes the following steps:

[0095] A point on the angular bisector of the line where the main wiper blade's extreme position and the line where the initial position are located is taken as a point on the main scraper shaft, thereby obtaining the wiper blade of the main wiper, i.e., the preliminary limiting information of the main wiper blade. The upper dead point and the lower dead point of the main wiper blade are rotated with a point on the main scraper shaft to form two arcs, which intersect with the line where the main wiper blade's initial position is located to form the wiping area of ​​the main wiper. The wiping area of ​​the main wiper is an area with a certain fluctuation range limited by the main wiper blade constraint conditions, the wiper field of view, the main wiper blade length, and a point on the main scraper shaft.

[0096] In one embodiment, the auxiliary wiper wiping area boundary information includes the line where the auxiliary wiper blade initial position is located, the auxiliary wiper wiping area and the position of the auxiliary wiper shaft, and the step of "obtaining the auxiliary wiper wiping area boundary information" specifically includes the following steps:

[0097] According to the length of the auxiliary scraper blade and the constraint conditions of the auxiliary scraper blade, an initial position of the auxiliary scraper blade is obtained;

[0098] A circle is drawn with the top of the main scraper shaft as the center and the preset distance between the two scraper shafts as the radius. A point on the circle (located below the engine hood) is selected as a point on the auxiliary scraper shaft. The two end points of the initial stop position of the auxiliary scraper blade rotate around the auxiliary scraper shaft to obtain the auxiliary scraping area.

[0099] According to the auxiliary scraper and brush area and the constraints of the auxiliary scraper shaft as shown in the following table, select the auxiliary scraper shaft position that meets the auxiliary wiper and brush area:

[0100] Serial number project Require 1 The distance K between the auxiliary scraping wiper area and the upper right vertex of the glass <400mm 2 The distance between the auxiliary scraping area and the upper black edge M 0-40mm 3 The distance between two scraper shafts N b-50mm→b+50mm 4 Coverage of Area B (Regulatory Horizon) ＞90％

[0101] As described above, the auxiliary brush hanging area fully considers the driver's right front perception field of view and the ADAS radar layout requirements.

[0102] In one embodiment, the step of “obtaining a wiper axis direction that satisfies both the wiper attack angle and the lift angle” specifically includes the following steps:

[0103] Establishing a curve of the wiper wiping angle and the wiper attack angle as well as the wiper wiping angle and the wiper lift angle (the horizontal axis represents the wiper wiping angle, and the vertical axis represents the wiper attack angle / lift angle);

[0104] According to the constraints of the wiper attack angle and the wiper lift angle, as well as the curves of the wiping angle and the wiper attack angle and the wiper lift angle, the wiper axis direction that satisfies both the wiper attack angle and the wiper lift angle is obtained.

[0105] In one embodiment, the attack angle and the elevation angle are defined as:

[0106] like Figure 3 Input the wiper shaft (main wiper shaft or auxiliary wiper shaft) position, wiper area (main wiper area or auxiliary wiper area), such as Figure 4 Draw a line AB through the wiper shaft with a length of 100 mm. Figure 5 Select point B as a circle with a radius of r perpendicular to AB, and select point C with an arc length of α, and use AC as the direction of the wiper axis, such as Figure 6 With AC as the wiper axis, calculate the attack angle and lift angle of the wiper at different positions. Figure 7 , r is the circle with radius r made by point B, r represents the radius, such as Figure 8 , a actually represents the position of point C on this circle, a = arc length between points C1 and C0 / circumference. Fig. 9 , the attack angle is the angle between the center line of the scraper (strip) and the normal line of the glass at a certain scraping position, such as Fig.10 The lifting angle is the change in the angle between the scraper arm and the arm seat relative to the initial state during the scraping process.

[0107] In one embodiment, the step of "obtaining a wiper axis direction that satisfies both the wiper attack angle and the wiper lift angle according to the constraints of the wiper attack angle and the wiper lift angle and the curves of the wiping angle and the wiper attack angle and the wiper lift angle of the wiper" specifically includes the following steps:

[0108] By adjusting the radius r and α, find the directions of the main scraper axis and the secondary scraper axis that satisfy both the wiper attack angle and the lift angle. The specific requirements for the wiper attack angle and the lift angle are as follows:

[0109] 1) The attack angle ranges from -5 to 5°, the initial attack angle is between 3 and 5°, and the extreme position attack angle is between -5 and -3°;

[0110] 2) The attack angle should decrease as evenly as possible, and the turning point should be between 1 / 3 and 2 / 3 of the entire scraping angle range;

[0111] 3) The angle of attack does not exceed 0.2°;

[0112] 4) Within the entire scraping range, the range of variation of the lifting angle D≤4°.

[0113] In one embodiment, the step of "obtaining the position of the wiper motor output shaft and the driving structure of the wiper transmission assembly" specifically includes the following steps:

[0114] Determine the position of the wiper motor output shaft according to the structure of the water trough;

[0115] The driving structure of the wiper transmission assembly is determined according to the structure of the surrounding sheet metal and the position of the wiper shaft. The driving forms of the wiper transmission assembly include dual motors driving the main wiper and auxiliary wiper respectively and single motor driving the main wiper and auxiliary wiper, that is, two motors drive the main wiper and auxiliary wiper respectively or a single motor drives one wiper shaft first, and then drives the other wiper shaft to rotate through one wiper.

[0116] In one embodiment, the water flow channel is usually arranged in the area where the wiper transmission assembly is assembled on the front panel, such as Fig.11 and 12 , the output shaft position is determined according to the water flow channel structure, which specifically includes the following steps:

[0117] 1. Determine the position of the output shaft on the driving side in the water flow channel based on X1 and Y1: X1 is the clearance value between the output shaft and the water flow channel in the X direction; Y1 is the clearance value between the output shaft and the water flow channel in the Y direction

[0118] 2. Determine the X-direction position of the output shaft on the passenger side in the water flow channel based on X2

[0119] 3. Determine the output shaft position on the passenger side based on the Y-direction distance Y2 between the output shafts on the driver side and the passenger side.

[0120] The above X1, X2, Y1, and Y2 parameter values ​​are often defined based on empirical values ​​and then fine-tuned.

[0121] In one embodiment, the step of "obtaining a verified vehicle wiper according to the acquired wiper sensing field of view, the boundary information of the main wiper, the boundary information of the auxiliary wiper, the wiper shaft direction that satisfies the wiper attack angle and the lift angle, the position of the wiper motor output shaft, and the driving structure of the wiper transmission assembly" specifically includes the following steps:

[0122] According to the positions of the main scraper shaft and the auxiliary scraper shaft, the lengths of the two wiper rocker arms and the connecting rod that meet the wiping angle requirements are solved in the 2D plane (the normal plane of the two scraper shaft angle bisectors). Specifically, the lengths of the connecting rod and the wiper rocker arms are solved by creating relevant constraints in the sketch.

[0123] The dimensions of the planar four-link are converted into a spatial four-link structure to obtain the calibrated vehicle wiper.

[0124] In one embodiment, the step of "converting the dimensions of the planar four-bar linkage into a spatial four-bar linkage structure to obtain a verified vehicle wiper" specifically includes the following steps:

[0125] Convert the dimensions of the planar four-bar linkage into a spatial four-bar linkage structure: This is equivalent to moving the features in 2D into space along the normal direction of the plane, while taking into account the thickness, clearance and other dimensional requirements of each link and rocker arm.

[0126] Perform DMU motion simulation on the spatial four-bar linkage, fine-tune the size values ​​of the rocker arm and connecting rod of the four-bar linkage, and make the wiping angles of the two wiper shafts in the motion simulation consistent with the required wiping angles.

[0127] Add features to lines and surfaces in space to generate physical objects. The generated physical objects need to meet the following parameter requirements:

[0128] Serial number project Require 1 Clearance between wiper four-link mechanism and sheet metal ≥7mm 2 Clearance between wiper four-link motion envelope and sheet metal ≥10mm 3 The clearance between the four-bar linkage and the non-moving parts inside the transmission mechanism ≥5mm 4 Wiper transmission angle 40°-140° 5 The angle between the ball head and the bowl ≤5°

[0129] In a second aspect, the present application provides a vehicle wiper system forward arrangement verification system based on user perception, comprising:

[0130] A first acquisition module is used to acquire the wiper sensing field of view;

[0131] A second acquisition module is used to acquire boundary information of the main wiper;

[0132] A third acquisition module is used to obtain boundary information of the auxiliary wiper;

[0133] A fourth acquisition module, used to acquire a wiper axis direction that satisfies both a wiper attack angle and a lift angle;

[0134] A fifth acquisition module, used to acquire the position of the wiper motor output shaft and the driving structure of the wiper transmission assembly;

[0135] The wiper acquisition control module is used to obtain the verified vehicle wiper according to the acquired wiper sensing field of view, the boundary information of the main wiper, the boundary information of the auxiliary wiper, the wiper shaft direction that satisfies the wiper attack angle and the lift angle, the position of the wiper motor output shaft and the driving structure of the wiper transmission assembly.

[0136] The improved user-perception-based forward layout verification system for a vehicle wiper system provided in the present application performs layout verification of the wiper system through a forward layout method, thereby improving the accuracy and convenience of the layout, reducing repeated modification and adjustment of the layout, and improving work efficiency.

[0137] In one embodiment, the first acquisition module includes:

[0138] A lower visual field acquisition submodule is used to acquire the driver's lower visual field;

[0139] The wiper sensing vision line acquisition submodule is communicatively connected with the lower vision surface acquisition submodule and is used for shifting the lower vision surface downward by the wiper blade height to acquire the wiper sensing vision line.

[0140] In a third aspect, the present application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements all the method steps of the vehicle wiper system forward arrangement verification method and system based on user perception as described above.

[0141] The present invention implements all or part of the process in the above method, and can also be completed by instructing related hardware through a computer program. The computer program can be stored in a computer-readable storage medium. When the computer program is executed by a processor, the steps of each method embodiment can be implemented. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium may include: any entity or device capable of carrying computer program code, recording medium, USB flash drive, mobile hard disk, disk, optical disk, computer memory, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), electric carrier signal, telecommunication signal and software distribution medium. It should be noted that the content contained in the computer-readable medium can be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, the computer-readable medium does not include electric carrier signals and telecommunication signals.

[0142] Based on the same inventive concept, an embodiment of the present application also provides an electronic device, including a memory and a processor, wherein the memory stores a computer program running on the processor, and when the processor executes the computer program, all or part of the method steps in the above method are implemented.

[0143] The processor may be a central processing unit (CPU), other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor, etc. The processor is the control center of a computer device, and uses various interfaces and lines to connect various parts of the entire computer device.

[0144] The memory can be used to store computer programs and / or modules. The processor realizes various functions of the computer device by running or executing the computer programs and / or modules stored in the memory, and calling the data stored in the memory. The memory can mainly include a program storage area and a data storage area, wherein the program storage area can store an operating system and at least one application required for a function (such as a sound playback function, an image playback function, etc.); the data storage area can store data created according to the use of the mobile phone (such as audio data, video data, etc.). In addition, the memory can include a high-speed random access memory, and can also include a non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a smart memory card (SmartMedia Card, SMC), a secure digital (Secure Digital, SD) card, a flash card (Flash Card), at least one disk storage device, a flash memory device, or other volatile solid-state storage devices.

[0145] It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as methods, systems, servers or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) containing computer-usable program codes.

[0146] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), servers, and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as a combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0147] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0148] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0149] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A vehicle wiper system forward arrangement verification method based on user perception, characterized in that: The following steps are involved: Get the wiper sensing vision line, make a straight line in the Y direction according to the driver's eye point position V1 specified in the legal vision, and its length is determined according to the width of the glass to make the driver's lower vision surface, extract the lower edge line of the black edge of the glass, and use the bridge command in CATIA to make the surface formed by these two lines as the driver's lower vision surface, and offset the lower vision surface downward by the height of the wiper blade. The intersection of the downward offset lower vision surface and the glass surface is the wiper vision line; Get the boundary information of the main wiper; Get the boundary information of the auxiliary wiper; Obtain the wiper axis direction that satisfies both the wiper attack angle and the lift angle; Obtain the position of the wiper motor output shaft and the drive structure of the wiper transmission assembly; The verified vehicle wiper is obtained based on the acquired wiper sensing field of view, the boundary information of the main wiper, the boundary information of the auxiliary wiper, the wiper shaft direction that satisfies both the wiper attack angle and the lift angle, the position of the wiper motor output shaft and the driving structure of the wiper transmission assembly.

2. The vehicle wiper system forward arrangement verification method based on user perception according to claim 1, characterized in that: The step of "obtaining the wiper sensing vision line" specifically includes the following steps: Obtain the driver's lower field of view; Offset the lower field of view downward by the wiper blade height to obtain the wiper sensing field of view line.

3. The vehicle wiper system forward arrangement verification method based on user perception according to claim 1, characterized in that: The step of "obtaining boundary information of the main wiper" specifically includes the following steps: According to the length of the main wiper blade and the limit position constraint condition of the main wiper blade, the upper stop point and the lower stop point of the main wiper blade are obtained, and according to the upper stop point and the lower stop point of the main wiper blade, the line where the limit position of the main wiper blade is located is obtained; Determine the line where the initial parking position of the main scraper blade is located; Obtain a point on the main scraper axis according to the line where the main scraper blade's limit position is located and the line where the initial position is located; The upper and lower dead points of the main scraper blade are rotated about a point on the main scraper shaft to form two arcs, which intersect with the line where the initial position of the main scraper blade is located to form the wiping area of ​​the main wiper, and the position of the main scraper shaft is obtained according to the constraint conditions of the main scraper shaft.

4. The vehicle wiper system forward arrangement verification method based on user perception according to claim 1, characterized in that: The step of "obtaining the boundary information of the auxiliary wiper area" specifically includes the following steps: According to the length of the auxiliary scraper blade and the constraint conditions of the auxiliary scraper blade, an initial position of the auxiliary scraper blade is obtained; Draw a circle with the main scraper axis as the center and the distance between the two scraper axes as the radius, select a point on the circle as the auxiliary scraper axis, and rotate around the auxiliary scraper axis with the two end points of the initial stop position of the auxiliary scraper blade to obtain the auxiliary scraping area; The position of the auxiliary scraper shaft is obtained according to the auxiliary scraper brush area and the constraints of the auxiliary scraper shaft.

5. The vehicle wiper system forward arrangement verification method based on user perception according to claim 1, characterized in that: The step of "obtaining a wiper axis direction that satisfies both the wiper attack angle and the lift angle" specifically includes the following steps: Establishing the curves of the wiper wiping angle and the wiper attack angle as well as the wiper wiping angle and the wiper lift angle; According to the constraints of the wiper attack angle and the wiper lift angle, as well as the curves of the wiping angle and the wiper attack angle and the wiper lift angle, the wiper axis direction that satisfies both the wiper attack angle and the wiper lift angle is obtained.

6. The vehicle wiper system forward arrangement verification method based on user perception as claimed in claim 1, characterized in that: The step of "obtaining the position of the wiper motor output shaft and the driving structure of the wiper transmission assembly" specifically includes the following steps: Determine the position of the wiper motor output shaft according to the structure of the water trough; The driving structure of the wiper transmission assembly is determined according to the structure of the surrounding sheet metal and the position of the wiper shaft. The driving forms of the wiper transmission assembly include dual motors driving the main wiper and the auxiliary wiper respectively and a single motor driving the main wiper and the auxiliary wiper.

7. The vehicle wiper system forward arrangement verification method based on user perception as claimed in claim 1, characterized in that: The step of "obtaining a verified vehicle wiper according to the acquired wiper sensing field of view, the boundary information of the main wiper, the boundary information of the auxiliary wiper, the wiper shaft direction that satisfies the wiper attack angle and the lift angle, the position of the wiper motor output shaft, and the driving structure of the wiper transmission assembly" specifically includes the following steps: According to the position of the main scraping shaft and the position of the auxiliary scraping shaft, the lengths of the two wiper rocker arms and the connecting rod that meet the scraping angle requirements are obtained; The dimensions of the planar four-link are converted into a spatial four-link structure to obtain the calibrated vehicle wiper.

8. A vehicle wiper system forward arrangement verification system based on user perception, characterized in that: include: A first acquisition module is used to acquire the wiper sensing field of view; Specifically, a straight line in the Y direction is made according to the eye point position V1 of the driver specified in the legal vision field, and its length is determined according to the width of the glass to make the driver's lower vision surface, and the lower edge line of the black edge of the glass is extracted. Using the bridge command in CATIA, a curved surface formed by these two lines is made as the driver's lower vision surface, and the lower vision surface is offset downward by the height of the wiper blade, and the intersection line of the downwardly offset lower vision surface and the glass surface is the wiper vision line; A second acquisition module is used to acquire boundary information of the main wiper; A third acquisition module is used to obtain boundary information of the auxiliary wiper; A fourth acquisition module, used to acquire a wiper axis direction that satisfies both a wiper attack angle and a lift angle; A fifth acquisition module, used to acquire the position of the wiper motor output shaft and the driving structure of the wiper transmission assembly; The wiper acquisition control module is used to obtain the verified vehicle wiper according to the acquired wiper sensing field of view, the boundary information of the main wiper, the boundary information of the auxiliary wiper, the wiper shaft direction that satisfies the wiper attack angle and the lift angle, the position of the wiper motor output shaft and the driving structure of the wiper transmission assembly.

9. A vehicle wiper system forward arrangement verification system based on user perception as claimed in claim 8, characterized in that: The first acquisition module includes: A lower visual field acquisition submodule is used to acquire the driver's lower visual field; The wiper sensing vision line acquisition submodule is communicatively connected with the lower vision surface acquisition submodule and is used for shifting the lower vision surface downward by the wiper blade height to acquire the wiper sensing vision line.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, which, when executed by a processor, implements all method steps of the vehicle wiper system forward arrangement verification method based on user perception as claimed in any one of claims 1 to 7.

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