Method for determining the position of the reflection of a vehicle's instrument panel

Abstract

This invention provides a method for determining the position of the reflection of an instrument panel on a vehicle, relating to the field of safe driving. It includes: acquiring the driver's position on the vehicle, denoted as a first position; acquiring the position of the vehicle's side window on the vehicle, denoted as a second position; acquiring the position of the vehicle's rearview mirror on the vehicle, denoted as a third position; acquiring the position of the instrument panel on the vehicle based on preset instrument placement parameters and the first position, denoted as a fourth position; acquiring the visible area of ​​the mirror lens on the side window for observing the rearview mirror based on the first, second, third, and fourth positions; and acquiring the area position of the instrument panel's reflection on the side window based on the first, second, and fourth positions. This invention can effectively acquire the area position of the instrument panel's reflection on the side window, thereby adjusting the positions of the driver, side window, and rearview mirror on the vehicle based on the area position of the instrument panel's reflection on the side window, thus reducing the impact of the instrument panel's reflection on driving safety.

Description

Technical Field

[0001] This invention relates to the field of safe driving in automobiles, and more particularly to a method for determining the position of the reflection of an instrument panel on a vehicle. Background Technology

[0002] When a car is in motion, 80% of the driving information a driver receives is through vision; therefore, good visibility is a prerequisite for safe driving. Meanwhile, the instruments on the vehicle used to display driving status, also known as the instrument cluster or simply the instrument panel, are crucial components for interaction between the vehicle and the driver.

[0003] Vehicle instrument panels are typically equipped with lights to provide drivers with auxiliary driving information at night. These lights, when illuminated by side windows, create a reflection of the instrument panel on the exterior of the vehicle (e.g., ...). Figure 1 As shown in the image, the instrument panel's reflection makes it difficult for drivers to obtain information about the vehicle's driving environment at night through the rearview mirror, thus posing a safety hazard.

[0004] Currently, there is no existing technology that can effectively determine the position of the reflection of the instrument panel on a vehicle. Summary of the Invention

[0005] The main objective of this invention is to provide a method for determining the reflection position of an instrument panel on a vehicle, thereby solving the problem that existing technical solutions cannot effectively determine the reflection position of an instrument panel on a vehicle.

[0006] This invention provides a method for determining the position of the reflection of an instrument panel on a vehicle. The method for obtaining the position of the instrument panel's reflection on the side window, denoted as a first region, includes: obtaining the driver's position on the vehicle, denoted as a first position; obtaining the position of the vehicle's side window on the vehicle, denoted as a second position; obtaining the position of the vehicle's rearview mirror on the vehicle, denoted as a third position; obtaining the position of the instrument panel on the vehicle based on preset instrument placement parameters and the first position, denoted as a fourth position; obtaining the visible area of ​​the lens on the side window used for observing the rearview mirror based on the first position, second position, third position, and fourth position; and obtaining the position of the area of ​​the instrument panel's reflection on the side window based on the first position, second position, and fourth position.

[0007] In some embodiments, the method further includes: obtaining the overlapping area of ​​the visible area of ​​the lens and the area of ​​the instrument reflection on the side window, denoted as the first overlapping area; and adjusting the arrangement position of the side window and the rearview mirror on the vehicle according to the first overlapping area to reduce the area ratio of the first overlapping area on the side window.

[0008] In some embodiments, adjusting the arrangement positions of the side window and the rearview mirror on the vehicle according to the first overlapping area to reduce the area ratio of the first overlapping area on the side window includes: adjusting the second position according to the first overlapping area to obtain a second adjusted position; adjusting the third position according to the first overlapping area to obtain a third adjusted position; obtaining the area position of the instrument reflection on the side window according to the first position, the second adjusted position, and the fourth position, and recording it as a first adjusted area; obtaining the visible area of ​​the lens on the side window for observing the rearview mirror according to the first position, the second adjusted position, and the third adjusted position, and recording it as a second adjusted area; obtaining the overlapping area of ​​the first adjusted area and the second adjusted area, and recording it as a second overlapping area; and adjusting the second adjusted position and the third adjusted position according to the second overlapping area to reduce the area ratio of the second overlapping area on the second adjusted area.

[0009] In some embodiments, obtaining the position of the instrument's reflection on the side window based on the first position, the second adjustment position, and the fourth position, denoted as the first adjustment area, includes: obtaining the position of the instrument's reflection on the vehicle based on the first position, the second adjustment position, and the fourth position, denoted as the fifth adjustment position; and obtaining the first adjustment area based on the fifth adjustment position and the first position.

[0010] In some embodiments, obtaining the driver's position in the vehicle, referred to as the first position, includes: obtaining the vehicle's size parameters, including the vehicle's length, width, and height; obtaining the positions of the accelerator, brake, and clutch in the vehicle, referred to as pedal positions; and obtaining the driver's position in the vehicle based on the vehicle's size parameters, the pedal positions, and preset comfortable postures of various human joints.

[0011] In some embodiments, obtaining the driver's position in the vehicle, referred to as the first position, further includes: obtaining the area of ​​the driver's eye movement in the vehicle, referred to as the eye ellipse position, based on the driver's position in the vehicle.

[0012] In some embodiments, obtaining the position of the instrument on the vehicle based on preset instrument placement parameters and the first position, denoted as the fourth position, includes: obtaining the line connecting the center of the eye ellipse position and the center of the instrument, denoted as the first instrument connection; obtaining the angle between the first instrument connection and the horizontal plane, denoted as the downward viewing angle; obtaining the angle between the first instrument connection and the plane containing the top surface of the instrument, denoted as the placement angle; obtaining the length of the first instrument connection, denoted as the instrument viewing distance; and determining the fourth position based on the eye ellipse position, the downward viewing angle, the placement angle, and the obtained instrument viewing distance.

[0013] In some embodiments, the downward viewing angle is no greater than 30°, the placement angle is 80-100°, and the first instrument connection is 700-850mm.

[0014] In some embodiments, obtaining the visible area of ​​the lens on the side window for observing the rearview mirror based on the first position, the second position, and the third position includes: obtaining the reflection position of the instrument on the vehicle based on the first position, the second position, and the fourth position, denoted as the fifth position; obtaining the outline of the fifth position, denoted as the first outline; constructing a line connecting the eye ellipse position and the first outline, denoted as the first eye view line; obtaining the first overlapping area between the first eye view line and the side window, wherein the first overlapping area is the visible area of ​​the lens.

[0015] In some embodiments, obtaining the second region based on the first position, the second position, and the third position includes: obtaining the outline of the third position, denoted as the second outline; constructing a line connecting the eye ellipse position and the second outline, denoted as the second eye view line; obtaining the first overlapping region between the second eye view line and the side window, wherein the second overlapping region is the region where the instrument reflection is on the side window.

[0016] This invention provides a method for determining the position of the reflection of an instrument panel on a vehicle. The method includes acquiring the positions of the driver, side window, and rearview mirror on the vehicle; acquiring the position of the instrument panel on the vehicle; acquiring the visible area of ​​the lens on the side window used for observing the rearview mirror; and acquiring the position of the area where the instrument panel's reflection appears on the side window. Thus, this invention can adjust the positions of the driver, side window, and rearview mirror on the vehicle based on the position of the instrument panel's reflection on the side window, thereby reducing the impact of the instrument panel's reflection on driving safety. Attached Figure Description

[0017] Figure 1 A schematic diagram of an existing instrument;

[0018] Figure 2 This is a schematic diagram of the instrument panel's reflection on an existing commercial vehicle.

[0019] Figure 3 A schematic diagram of an instrument panel using the first method for reducing the reflection of vehicle instrument panels;

[0020] Figure 4 This is a CATIA software simulation view of an instrument using the first method for reducing the reflection of vehicle instrument panels.

[0021] Figure 5 This is a schematic diagram showing the arrangement of the instrument, human body, and eye ellipse.

[0022] Figure 6 This is a schematic diagram showing the arrangement of the extreme point, instrument, first contour line, first eye view line, side window, and first region when the eye ellipse takes a certain extreme point;

[0023] Figure 7 This is a schematic diagram showing the arrangement of the instrument panel, rearview mirror, instrument panel reflection, first region, and second region when the eye ellipse takes a certain extreme point.

[0024] Figure 8 This is a schematic diagram showing the layout of the rearview mirror, the first area, the second area, and the overlapping area.

[0025] Figure 9 A physical illustration of the instrument panel and its reflection in an existing commercial vehicle.

[0026] Figure 10 This is a flowchart illustrating the first method for reducing the reflection of vehicle dashboard.

[0027] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0028] It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0029] The instrument cluster, also known simply as the instrument panel, is a crucial component for interaction between the vehicle and the driver. The information displayed on the instrument panel significantly impacts driver safety; therefore, vehicles generally require the instrument panel to display as comprehensive information as possible. For example... Figure 2 Traditional instruments typically include information such as speed, RPM, fuel consumption, water temperature, urea, mileage, voltage, and fault alarms.

[0030] Because the information displayed on the instrument panel is highly instructive for drivers on how to drive and has a significant impact on driving safety, vehicles generally require the instrument panel to display as much information as possible (that is, the instrument panel provides the driver with as much auxiliary driving information as possible) so that the instrument panel can better assist the driver in driving.

[0031] The exterior rearview mirrors of a vehicle are an important component for interaction between the vehicle and the driver. The driver can use the exterior rearview mirrors to observe the trailer, cargo box and vehicles behind, so as to ensure the safety of trailer coupling and lane changing. At present, vehicles (such as trucks) generally use integrated rearview mirrors to ensure their aesthetics.

[0032] For those with driving experience, the phenomenon of reflections is easy to understand. At night, due to the self-illuminating instrument panel, the light emitted will form a reflection on the car door windows (i.e., side windows) (commonly known as "ghosting"). If the reflection appears in the rearview mirror's observation area, it will seriously affect the driver's night vision.

[0033] Currently, to ensure driving safety, and due to regulations and related technical specifications, exterior rearview mirrors need to be able to see the rear of the trailer, and the extension range of the mirrors is significantly limited. Essentially, no vehicle can completely eliminate this limitation. Figure 3 As shown in the rectangular frame, the rearview mirror area reflects the entire instrument panel, and the large area seriously affects the driver's nighttime visibility and safety.

[0034] To address the aforementioned technical problems, this invention provides a method for determining the reflection position of vehicle instruments, enabling designers or vehicle maintenance personnel (such as drivers) to minimize the impact of instrument reflections on driving safety by adjusting the positions of the driver, side windows, and instruments on the vehicle. Specifically, the method includes:

[0035] S1. Obtain the driver's position in the vehicle, denoted as the first position; obtain the position of the car's side window in the vehicle, denoted as the second position; obtain the position of the car's rearview mirror in the vehicle, denoted as the third position.

[0036] In actual operation, the steps for obtaining the first position include: N111, obtaining the vehicle's dimensional parameters, including the vehicle's length, width, and height; N112, obtaining the positions of the accelerator, brake, and clutch on the vehicle, denoted as pedal positions; N113, obtaining the driver's position on the vehicle based on the vehicle's dimensional parameters, the pedal positions, and preset comfortable postures of various human joints. In this way, the present invention can initially determine the driver's position, thereby determining the eye ellipse position, the visible area on the rearview mirror, and the position of the instrument panel reflection on the side window.

[0037] In practical application, this invention also includes the step of obtaining the eye ellipse position, comprising: obtaining the area of ​​eye movement of the driver in the vehicle based on the driver's position in the vehicle, and denoting it as the eye ellipse position. In practical application, this invention needs to construct the eye movement trajectory based on the driver's commonly used eye movement trajectory, and then draw the eye ellipse position based on the eye movement trajectory. This eye ellipse is an important element for accurately determining whether the instrument panel reflection affects the rearview mirror observation.

[0038] S2. Obtain the position of the instrument on the vehicle according to the preset instrument placement parameters and the first position, and record it as the fourth position;

[0039] The steps for obtaining the fourth position include: obtaining the line connecting the center of the eye ellipse and the center of the instrument, denoted as the first instrument connection; obtaining the angle between the first instrument connection and the horizontal plane, denoted as the downward viewing angle; obtaining the angle between the first instrument connection and the plane containing the top surface of the instrument, denoted as the placement angle; obtaining the length of the first instrument connection, denoted as the instrument viewing distance; and determining the fourth position based on the eye ellipse position, the downward viewing angle, the placement angle, and the obtained instrument viewing distance.

[0040] In practical operation, the instrument arrangement parameters in this invention mainly include three aspects: the instrument's viewing distance, the instrument's downward viewing angle, and the instrument's placement angle. The instrument's viewing distance refers to the distance between the instrument's center and the viewer's eyes, which is between 700 and 850 mm. The downward viewing angle is the angle formed between the line connecting the instrument's center and the viewer's eye (the corner of the eye) and the horizontal plane, and should be less than 30 degrees. The placement angle is the angle formed between the corner of the eye and the instrument's plane, and is generally best close to 90 degrees.

[0041] S3. Obtain the visible area of ​​the lens on the side window for observing the rearview mirror based on the first position, the second position, the third position and the fourth position;

[0042] In this step, the visible area of ​​the lens can also be referred to as the first area. The method for obtaining the first area includes: obtaining the reflection position of the instrument on the vehicle based on the first position, the second position and the fourth position, and denoting it as the fifth position; obtaining the outline of the fifth position and denoting it as the first outline; constructing the line connecting the eye ellipse position and the first outline, and denoting it as the first eye view line; obtaining the first overlapping area between the first eye view line and the side window, and the first overlapping area is the visible area of ​​the lens.

[0043] S4. Obtain the location of the area where the instrument's reflection appears on the side window based on the first position, the second position, and the fourth position.

[0044] The area where the instrument panel's reflection appears on the side window can also be referred to as the second area. The steps for obtaining the second area include: obtaining the outline of the third position, denoted as the second outline; constructing a line connecting the eye ellipse position and the second outline, denoted as the second eye view line; obtaining the first overlapping area between the second eye view line and the side window, and the second overlapping area is the area where the instrument panel's reflection appears on the side window.

[0045] In actual operation, the method of obtaining the fifth position in this invention includes: the premise of obtaining the fifth position is that the arrangement of the side windows has been initially determined (the position and tilt angle of the side windows are related to the overall layout dimensions and the shape of the cab, which will not be elaborated here), the side windows are simplified to a plane as a symmetrical plane, and the instrument cluster can be obtained by symmetrically aligning the instrument cluster.

[0046] After obtaining the eye ellipse position, the step of obtaining the first region specifically includes: obtaining the first contour line of the fifth position, denoted as the first contour line; constructing a line connecting the eye ellipse position and the first contour line, denoted as the first eye view line; obtaining the first overlapping area between the first eye view line and the side window, where the first overlapping area is the first region. In this way, the present invention achieves the acquisition of the first region. Under the influence of the aforementioned first region, the present invention can conveniently reduce the area of ​​the instrument panel reflection in the vehicle's night mode, thereby improving the night driving visibility and enhancing nighttime visibility safety.

[0047] In practical application, to further improve the accuracy of the first region, this invention allows for the selection of a specific extreme point within the eye ellipse. The line connecting this extreme point and the first contour line determines the first eye viewing angle line. This results in a relatively smaller and more accurate range for the first eye viewing angle line. In practice, this extreme point can be the center of the eye ellipse or the position of the driver's eyes when in the most comfortable driving position.

[0048] In actual work, after obtaining the eye ellipse position, the step of obtaining the second region specifically includes: obtaining the first contour line of the third position, denoted as the second contour line; constructing the line connecting the eye ellipse position and the second contour line, denoted as the second eye view line; obtaining the first overlapping area between the second eye view line and the side window, and the second overlapping area is the second region.

[0049] The present invention further includes: obtaining the overlapping area of ​​the visible area of ​​the lens and the area of ​​the instrument reflection on the side window, denoted as the first overlapping area; and adjusting the arrangement position of the side window and the rearview mirror on the vehicle according to the first overlapping area to reduce the area ratio of the first overlapping area on the side window.

[0050] Adjusting the positions of the side windows and rearview mirrors on the vehicle according to the first overlapping area to reduce the area ratio of the first overlapping area on the side windows includes: adjusting the second position according to the first overlapping area to obtain a second adjustment position; adjusting the third position according to the first overlapping area to obtain a third adjustment position; obtaining the position of the instrument reflection on the side window based on the first position, the second adjustment position, and the fourth position, and recording it as the first adjustment area; obtaining the visible area of ​​the lens on the side window for observing the rearview mirror based on the first position, the second adjustment position, and the third adjustment position, and recording it as the second adjustment area; obtaining the overlapping area of ​​the first adjustment area and the second adjustment area, and recording it as the second overlapping area; and adjusting the second adjustment position and the third adjustment position according to the second overlapping area to reduce the area ratio of the second overlapping area on the second adjustment area.

[0051] In actual operation, the present invention can repeatedly perform the above steps of reducing the area ratio of the first overlapping area on the side window in order to adjust the arrangement of the rearview mirror and the side window to the optimal position, thereby minimizing the impact of the instrument projection on the driver's driving vision.

[0052] In actual work, the first and second overlapping areas can both be referred to as overlapping areas. Since the design of the instrument information nighttime reflection layout involves many cab hard point parameters, and the correlation between the above cab hard point parameters is also relatively strong, it is possible that adjusting one parameter will cause changes to many other parameters.

[0053] The position of the instrument's reflection on the side window is obtained based on the first position, the second adjustment position, and the fourth position, and is denoted as the first adjustment area. This includes: obtaining the position of the instrument's reflection on the vehicle based on the first position, the second adjustment position, and the fourth position, and denoted as the fifth adjustment position; and obtaining the first adjustment area based on the fifth adjustment position and the first position.

[0054] In response to the above problems, such as Figure 4 As shown, some vehicles have begun to feature a Dark Mode (black background with white text) for their instrument panels. This Dark Mode is a high-contrast or inverted color display mode. Compared to the traditional white background with black text, this black background with white text mode is generally considered to reduce eye strain and make it easier to read. Whether it's to "not disturb sleeping people" or "protect eyesight," the goal is to make the overall brightness of the screen closer to the nighttime environment, thereby reducing eye strain for oneself or others.

[0055] While the aforementioned instrument panel night mode can alleviate eye fatigue and make reading easier, it cannot eliminate or reduce reflections in the side window rearview mirror area. This is especially problematic for commercial vehicle cabs with flat-front designs, where the A-pillars are generally vertical, and the side window area and rearview mirror size are larger than in passenger cars. If the instrument panel reflections in the side window area cannot be reduced (or even eliminated), it will affect the driver's safety during nighttime driving and also hinder the driver's ability to observe the connection between the trailer and the main vehicle at night.

[0056] To address the aforementioned technical problems, this invention provides a method for determining the reflection position of instrument panels on a vehicle. This method primarily optimizes and reduces the reflection of the instrument panels in the side window rearview mirror area through two combined approaches, thereby improving nighttime driving visibility and enhancing nighttime safety. It should be noted that if substantially the same result is achieved, the method of this invention is not necessarily identical. Figure 10 The sequence of processes shown is limited.

[0057] In practical operation, the present invention includes the following methods for reducing the reflection of vehicle dashboard:

[0058] K1. Obtain the information displayed on the vehicle's instrument panel;

[0059] In this step, the main purpose of obtaining the display information is to obtain the position of the reflection information source on the instrument panel. This reflection information source will cause the instrument panel to form a reflection on the vehicle when the vehicle is in a low light or dark environment.

[0060] In actual operation, the observable display information of the instrument described in this invention includes meter header information, function display information, text reminder information, pop-up display information, permanent alarm light, cyclic alarm light, and main menu (see Table 2 in step S4 for details).

[0061] K2. Classify the displayed information according to the driver's usage needs during nighttime driving to obtain nighttime display information and nighttime non-display information;

[0062] In practice, nighttime display information mainly refers to driving information that needs to be displayed on the instrument panel when the vehicle is driving normally at night. Nighttime non-display information refers to driving information that does not need to be displayed on the instrument panel when the vehicle is driving normally at night. The difference between nighttime display information and nighttime non-display information is that nighttime display information is of higher importance and needs to be displayed regardless of whether the vehicle is driving during the day or at night. Nighttime non-display information is of lower importance and only needs to be displayed on the instrument panel during the day.

[0063] To more clearly illustrate the display of driving information in the instrument panel's night mode, the following table has been created:

[0064]

[0065]

[0066] In the instrument display information table above, "Normal display" means that when the instrument is in daytime mode, the observed driving information (such as vehicle speed) is displayed; "Fault display" means that when the instrument is in daytime mode, the observed driving information (such as transmission) is only displayed when a related fault occurs (such as transmission failure); "Digital display" means that when the instrument is in nighttime mode, the observed driving information (such as vehicle speed) is displayed digitally; "Small gauge display" means that when the instrument is in nighttime mode, the observed driving information (such as urea level indication) is displayed via a small gauge; and "No display" means that when the instrument is in nighttime mode, the observed driving information (such as total mileage display) is not displayed on the instrument.

[0067] In actual operation, non-display information at night includes digital display information and small gauge display information. Non-display information at night includes fault observation information and unnecessary observation information. Digital display information refers to the driving information displayed digitally when the instrument is in night mode. Small gauge display information refers to the driving information displayed on the small gauge when the instrument is in night mode. Fault observation information refers to the information that the instrument will only display when the relevant component fails. Unnecessary observation information refers to the information that is generally not displayed in night mode.

[0068] K3. The nighttime display information is placed in the center of the instrument, and the non-nighttime display information is arranged on both sides of the instrument. The background color of the two sides of the instrument is black.

[0069] In this step, the background in the center of the instrument panel can be designed as a bright color such as red or white. The background color on both sides of the instrument panel is black. When the instrument panel is not illuminated by headlights or other light sources, the non-display information on both sides of the instrument panel will be in darkness. The aforementioned non-display information will not form a reflection on the vehicle, thereby reducing the area of ​​the instrument panel reflection when the vehicle is in night mode, improving the visibility of the vehicle at night, and thus improving nighttime visibility safety.

[0070] K4. When the instrument is in night mode, the light in the middle of the instrument is in the display state, and the lights on both sides of the instrument are in the off state.

[0071] In this step, when the lights on both sides of the instrument are off and the instrument is in night mode, the non-display information on the instrument will be in darkness, so that the projection of the instrument on the side window will not include the aforementioned non-display information, which will result in a significant reduction in the projection area of ​​the instrument on the side window. Therefore, the present invention improves the night driving visibility and thus improves night driving safety.

[0072] Preferably, when the instrument is in fault mode, the light corresponding to the fault observation information is in the display state, while the light corresponding to the unnecessary observation information is in the off state. In this way, the present invention allows the driver to be promptly informed of fault information when a corresponding component (such as the transmission) in the vehicle malfunctions.

[0073] Therefore, based on the above steps, this invention can first complete the basic layout of one version, and then determine whether the corresponding parameters need to be adjusted and how to adjust them based on the relationship (overlapping area) between the instrument reflection on the rearview mirror and the visible area. When adjusting the hard point parameters of the cab, the following aspects should be considered: 1) Instrument position adjustment, the main consideration is to avoid the visible area of ​​the rearview mirror on the side window; 2) Instrument night light-emitting area adjustment, the main consideration is to avoid the visible area of ​​the rearview mirror on the side window; 3) Rearview mirror position adjustment, the main consideration is to avoid the reflection area of ​​the instrument on the side window; 4) Instrument sunshade design, the main consideration is to avoid the reflection on the side window; 5) Side window angle adjustment, the main consideration is to make the instrument reflection position avoid the visible area of ​​the rearview mirror; 6) Human body and instrument position adjustment, the main consideration is to adjust them together to a position away from the side window.

[0074] In practical operation, this invention can add a night mode to the instrument cluster. The night mode is mainly adjusted in two ways: Method 1, active adjustment: When driving at night, you can switch through the multimedia screen or the instrument cluster mode selection function, or you can switch through voice control; Method 2: The instrument cluster controls the connection between itself and the vehicle's BCM, and the outdoor light sensor is connected to the BCM. When the light sensor's lumen threshold signal is input (the same as the automatic headlight input signal), the adjustment is performed automatically.

[0075] In practical applications, to more clearly illustrate how this invention effectively solves the problem of vehicle instrument panel reflections affecting the driver's visibility, examples of both existing technical solutions and the solution of this invention are provided:

[0076] like Figure 7 As shown, a commercial vehicle that does not employ the method described in this invention for determining the reflection position of an instrument panel has a total wide-angle mirror area of ​​0.01m². 2 The area of ​​the instrument panel's reflection in the rearview mirror is (0.003 + 0.002) m². 2 Therefore, the proportion of the instrument's reflection on the wide-angle mirror is: (0.003+0.002) / 0.01=50%.

[0077] When the aforementioned commercial vehicle of the same model uses a method for determining the reflection position of the vehicle's instrument panel that is not described in this invention, the entire wide-angle mirror area is 0.015m².2 The area of ​​the instrument panel reflection in the rearview mirror is 0, the proportion of the instrument panel reflection on the wide-angle mirror is 0, the total area of ​​the main mirror is 0.029, the area of ​​the instrument panel reflection in the rearview mirror is 0.002, and the proportion of the instrument panel reflection on the rearview mirror is: 0.002 / 0.029 = 6.1%.

[0078] As can be seen from the above comparison, after adopting the method for determining the reflection position of the instrument on the vehicle as described in this invention, the area of ​​the instrument in the observation area of ​​the side window rearview mirror is greatly reduced, the safety of night driving is greatly improved, and the safety of night driving and the convenience of connecting the main and trailer are well guaranteed.

[0079] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or system. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or system that includes that element.

[0080] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0081] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method.

[0082] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural or procedural transformations made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of the present invention.

Claims

1. A method for determining the position of the reflection of an instrument panel on a vehicle, characterized in that, include: Obtain the driver's position in the vehicle and record it as the first position; Obtain the position of the car's side window on the vehicle, and denote it as the second position; Obtain the position of the car's rearview mirror on the vehicle, and denote it as the third position; The position of the instrument on the vehicle is obtained according to the preset instrument placement parameters and the first position, and is recorded as the fourth position; The visible area of ​​the lens on the side window for observing the rearview mirror is obtained based on the first position, the second position, and the third position. The location of the area of ​​the instrument's reflection on the side window is obtained based on the first position, the second position, and the fourth position. Also includes: The overlapping area between the visible area of ​​the lens and the area where the instrument reflection is on the side window is obtained is denoted as the first overlapping area; The positions of the side windows and the rearview mirrors on the vehicle are adjusted according to the first overlapping area to reduce the area ratio of the first overlapping area on the side windows. The step of obtaining the driver's position in the vehicle, denoted as the first position, also includes: The driver's eye movement area in the vehicle is obtained based on the driver's position in the vehicle and is denoted as the eye ellipse position. The step of obtaining the position of the instrument on the vehicle based on preset instrument placement parameters and the first position, denoted as the fourth position, includes: The line connecting the center of the eye ellipse and the center of the instrument is denoted as the first instrument connection. Obtain the angle between the first instrument connection and the horizontal plane, and record it as the downward viewing angle; obtain the angle between the first instrument connection and the plane where the top surface of the instrument is located, and record it as the placement angle; obtain the length of the first instrument connection, and record it as the instrument viewing distance; The fourth position is obtained based on the position of the eye ellipse, the downward viewing angle, the placement angle, and the instrument viewing distance.

2. The method for determining the reflection position of an instrument panel on a vehicle as described in claim 1, characterized in that, The step of adjusting the arrangement positions of the side windows and rearview mirrors on the vehicle according to the first overlapping area to reduce the area ratio of the first overlapping area on the side windows includes: The second position is adjusted according to the first overlapping area to obtain the second adjusted position; The third position is adjusted according to the first overlapping area to obtain the third adjusted position; The region of the instrument's reflection on the side window is obtained based on the first position, the second adjustment position, and the fourth position, and is denoted as the first adjustment region. Based on the first position, the second adjustment position, and the third adjustment position, the visible area of ​​the lens on the side window used for observing the rearview mirror is obtained again and recorded as the second adjustment area; Obtain the overlapping area of ​​the first adjustment area and the second adjustment area, and denote it as the second overlapping area; The second adjustment position and the third adjustment position are adjusted according to the second overlapping area to reduce the area ratio of the second overlapping area on the second adjustment area.

3. The method for determining the reflection position of an instrument panel on a vehicle as described in claim 2, characterized in that, The method of obtaining the region of the instrument's reflection on the side window based on the first position, the second adjustment position, and the fourth position, denoted as the first adjustment region, includes: The reflection position of the instrument on the vehicle is obtained based on the first position, the second adjustment position, and the fourth position, and is recorded as the fifth adjustment position; The first adjustment area is obtained based on the fifth adjustment position and the first position.

4. The method for determining the reflection position of an instrument panel on a vehicle as described in any one of claims 1 to 3, characterized in that, The process of obtaining the driver's position in the vehicle, denoted as the first position, includes: Obtain the vehicle's size parameters, including the vehicle's length, width, and height; The positions of the accelerator, brake, and clutch on the vehicle are obtained respectively and recorded as pedal positions; The driver's position in the vehicle is obtained based on the vehicle's size parameters, the pedal position, and preset comfortable postures of various human joints.

5. The method for determining the reflection position of an instrument panel on a vehicle as described in claim 1, characterized in that, The downward viewing angle is no greater than 30°, the placement angle is 80~100°, and the first instrument connection is 700~850mm.

6. The method for determining the reflection position of an instrument panel on a vehicle as described in claim 5, characterized in that, The step of obtaining the area position of the instrument's reflection on the side window based on the first position, the second position, and the fourth position includes: The position of the instrument's reflection on the vehicle is obtained based on the first position, the second position, and the fourth position, and is recorded as the fifth position. Obtain the contour line at the fifth position and denote it as the first contour line; Construct a line connecting the eye ellipse position and the first contour line, and denote it as the first eye view line; Obtain the first overlapping area between the first eye view line and the side window. The first overlapping area is the area where the instrument's reflection is on the side window.

7. The method for determining the reflection position of an instrument panel on a vehicle as described in claim 6, characterized in that, The step of obtaining the visible area of ​​the lens on the side window for observing the rearview mirror based on the first position, the second position, and the third position includes: Obtain the contour line at the third position, and denote it as the second contour line; Construct a line connecting the eye ellipse position and the second contour line, and denote it as the second eye viewpoint line; Obtain the second overlapping area between the second eye view line and the side window, and the second overlapping area is the visible area of ​​the lens.

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