Adjustment method of head-up display system, head-up display system and vehicle

Abstract

This application discloses an adjustment method for a head-up display (HUD) system, the HUD system itself, and a vehicle, belonging to the field of vehicle technology. The adjustment method for the HUD system includes: determining the driver's eye focus position based on vehicle speed; determining the target virtual image position of the HUD based on the focus position, wherein the target virtual image position corresponds to the focus position; determining the curvature adjustment range based on the initial virtual image position and the target virtual image position of the HUD; generating an adjustment command based on the target virtual image position and sending the adjustment command to a target drive mechanism, wherein the adjustment command instructs the target drive mechanism to adjust the curvature of the main curved mirror of the HUD to the target curvature according to the curvature adjustment range, so that the position of the virtual image formed by the HUD is located at the target virtual image position. The technical solution provided by this application can meet the needs of the human eye to observe virtual images at different focus positions, improving the safety of driving vehicles.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, specifically to an adjustment method for a head-up display system, the head-up display system, and a vehicle. Background Technology

[0002] To ensure safer and more stable driving, an increasing number of vehicles are equipped with head-up displays (HUDs). HUDs allow drivers to overlay various information, such as navigation, driving, and environmental data, within their field of vision, preventing them from looking down at information and deviating from their view of the road, thus avoiding dangerous driving consequences. The light source of the image generated by the HUD typically originates from below the dashboard, shines onto the windshield, and is then reflected by the windshield to the driver's eyes, allowing the driver to see a virtual image of the vehicle ahead through the windshield.

[0003] In related technologies, the distance between the virtual image formed by the head-up display device and the driver remains constant. However, the driver's eye focus position frequently changes, so a virtual image with a fixed position cannot meet the human eye's observation needs at different focusing positions. The driver's eye focus is frequently adjusted, which can easily cause eye fatigue and affect driving safety. Summary of the Invention

[0004] In view of this, this application provides an adjustment method for a head-up display system, a head-up display system, and a vehicle, which can meet the needs of the human eye to observe virtual images at different focal positions and improve the safety of driving the vehicle.

[0005] In a first aspect, embodiments of this application provide an adjustment method for a head-up display system, the method comprising:

[0006] Determine the driver's eye focus position based on vehicle speed;

[0007] Based on the focusing position, the target virtual image position of the head-up display is determined, wherein the target virtual image position corresponds to the focusing position;

[0008] The curvature adjustment range is determined based on the initial virtual image position and the target virtual image position of the head-up display;

[0009] Based on the target virtual image position, an adjustment command is generated and sent to the target drive mechanism. The adjustment command instructs the target drive mechanism to adjust the curvature of the main curved mirror of the head-up display to the target curvature according to the curvature adjustment range, so that the position of the virtual image formed by the head-up display is located at the target virtual image position.

[0010] Optionally, generating an adjustment command based on the target virtual image position and sending the adjustment command to the target drive mechanism includes:

[0011] Based on the position of the target virtual image, a first adjustment command is generated;

[0012] The first adjustment command is sent to the stretching mechanism, wherein the main curved mirror is a concave mirror, and the stretching mechanism is connected to the center of the convex surface of the main curved mirror. The first adjustment command is used to instruct the stretching mechanism to pull the main curved mirror along the normal of the main curved mirror so that the curvature of the main curved mirror reaches the target curvature.

[0013] Optionally, generating an adjustment command based on the target virtual image position and sending the adjustment command to the target drive mechanism includes:

[0014] Based on the position of the target virtual image, a second adjustment command is generated;

[0015] The second adjustment command is sent to multiple pushing mechanisms, wherein the main curved mirror is a concave mirror, and the pushing mechanism abuts against the edge region of the convex surface of the main curved mirror. The second adjustment command is used to instruct the pushing mechanism to move toward or away from the center of the main curved mirror so that the curvature of the main curved mirror reaches the target curvature.

[0016] Optionally, determining the driver's eye focus position based on vehicle speed includes:

[0017] Obtain the vehicle speed and information about the vehicle's surroundings;

[0018] Based on the vehicle speed and information about the vehicle's surroundings, the driver's eye focus position is determined.

[0019] Optionally, the method further includes:

[0020] Based on the height position of the driver's eyes, determine the initial downward viewing angle corresponding to the height position;

[0021] Based on the initial lower viewpoint, a first rotation command is determined, wherein the first rotation command is used to instruct the rotation mechanism to rotate the main curved mirror to adjust the lower viewpoint to the initial lower viewpoint.

[0022] Optionally, the method further includes:

[0023] Based on the initial downward viewing angle and the focal position, determine the target's downward viewing angle;

[0024] Based on the target lower viewpoint, a second rotation command is determined, wherein the second rotation command is used to instruct the rotation mechanism to rotate the main curved mirror to adjust the lower viewpoint from the initial lower viewpoint to the target lower viewpoint.

[0025] Secondly, embodiments of this application also provide a head-up display system, the system including a controller and a head-up display, the controller and the head-up display being electrically connected, wherein the head-up display includes a connected target drive mechanism and a main curved mirror, and light is projected onto the windshield of the vehicle through the main curved mirror;

[0026] The controller is used for:

[0027] Determine the driver's eye focus position based on vehicle speed;

[0028] Based on the focusing position, the target virtual image position of the head-up display is determined, wherein the target virtual image position corresponds to the focusing position;

[0029] The curvature adjustment range is determined based on the initial virtual image position and the target virtual image position of the head-up display;

[0030] Based on the position of the target virtual image, an adjustment command is generated;

[0031] The adjustment command is sent to the target drive mechanism;

[0032] The target drive mechanism is used to adjust the curvature of the main curved mirror to the target curvature according to the curvature adjustment range based on the adjustment command, so that the position of the virtual image formed by the head-up display is located at the target virtual image position.

[0033] Optionally, the target driving mechanism is a tensioning mechanism, and the tensioning mechanism is electrically connected to the controller;

[0034] The controller is also used for:

[0035] Based on the position of the target virtual image, a first adjustment command is generated;

[0036] The first adjustment command is sent to the stretching mechanism, wherein the main curved mirror is a concave mirror, and the stretching mechanism is connected to the center of the convex surface of the main curved mirror;

[0037] The stretching mechanism is used to pull the main curved mirror along the normal of the main curved mirror based on the first adjustment command, so that the curvature of the main curved mirror reaches the target curvature.

[0038] Optionally, the target driving mechanism is a pushing mechanism, and the pushing mechanism is electrically connected to the controller;

[0039] The controller is also used for:

[0040] Based on the target dashed line position, a second adjustment command is generated;

[0041] The second adjustment command is sent to the pushing mechanism, wherein the main curved mirror is a concave mirror, and the pushing mechanism abuts against the edge region of the convex surface of the main curved mirror;

[0042] The pushing mechanism is used to move toward or away from the center of the main curved mirror based on the second adjustment command, so that the curvature of the main curved mirror reaches the target curvature.

[0043] Thirdly, embodiments of this application also provide a vehicle that includes a head-up display system as described in any one of the embodiments of the second aspect of this application.

[0044] The head-up display (HUD) system adjustment method provided in this application first determines the driver's eye focus position based on the vehicle speed. This determines different eye focus positions corresponding to different vehicle speeds. Then, the target virtual image position of the HUD corresponding to the focus position is determined; that is, the target virtual image position is suitable for the driver's viewing needs of the virtual image on the windshield at the current vehicle speed. Furthermore, based on the initial virtual image position and the target virtual image position of the HUD, the curvature adjustment range is determined. According to the target virtual image position, an adjustment command is generated so that the target drive mechanism can adjust the curvature of the main curved mirror to the target curvature according to the adjustment command, thereby ensuring that the virtual image formed by the HUD is located at the target virtual image position. Since the target virtual image position corresponds to the focus position, this method enables timely adjustment of the virtual image position of the HUD according to different eye focus positions at different vehicle speeds. This satisfies the human eye's observation needs for the virtual image at different focus positions, allowing the driver to more accurately obtain different information corresponding to the virtual image from the windshield, avoiding driver eye fatigue, and improving driver safety. Attached Figure Description

[0045] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0046] Figure 1 This is a flowchart of an adjustment method for a head-up display system provided in an embodiment of this application;

[0047] Figure 2 This is a flowchart of an adjustment method for a head-up display system provided in an embodiment of this application;

[0048] Figure 3 This is a schematic diagram of an adjustment method for a head-up display system provided in an embodiment of this application;

[0049] Figure 4 This is a schematic diagram of an adjustment method for a head-up display system provided in an embodiment of this application;

[0050] Figure 5 This is a schematic diagram of an adjustment method for a head-up display system provided in an embodiment of this application;

[0051] Figure 6 This is a block diagram of a head-up display system provided in an embodiment of this application.

[0052] Figure label:

[0053] 401. Image generation unit;

[0054] 402. Secondary reflector;

[0055] 403. Principal curved mirror;

[0056] 404. Front windshield;

[0057] 405. Driver's eyes;

[0058] 406. Virtual image;

[0059] 407. Vehicles;

[0060] 408. Horizontal light;

[0061] 409. Connect the dots.

[0062] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0063] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0064] Unless otherwise defined, all technical terms used in the embodiments of this application have the same meaning as commonly understood by those skilled in the art.

[0065] To make the technical solutions and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0066] Firstly, combining Figures 1 to 6 As shown in the figure, this application provides an adjustment method for a head-up display system. This method can be applied to a head-up display system, which may include an electrically connected head-up display and a controller. The method can be executed by the controller. The adjustment method for the head-up display system includes steps 101 to 104.

[0067] In step 101, the driver's eye focus position is determined based on the vehicle speed.

[0068] Combination Figure 3 and Figure 6As shown, a head-up display system generally includes a controller 301 and a head-up display 302. The head-up display 302 includes an image generation unit 401 and optical components. The image generation unit can be composed of a TFT-LCD (Thin Film Transistor-Liquid Crystal Display) module, or a mini-LED (mini-Light-Emitting Diode) display module, an OLED (Organic Light-Emitting Diode) display module, a micro-LED (micro-Light-Emitting Diode) display module, a DLP (Digital Light Processing) projection display module, an LBS (Laser Beam Scanning) display module, an LCOS (Liquid Crystal on Silicon) display module, or a QLED (Quantum Dot Light Emitting Diodes) display module, etc. The light rays corresponding to the image source generated by the image generation unit 401, after propagation through the optical components, can be emitted from below the vehicle's dashboard onto the windshield 404, and then reflected by the windshield into the driver's eyes 405. Thus, the driver's eyes 405 can observe, through the windshield 404, a virtual image 406 formed in front of the vehicle using the optical components. This virtual image is generally located in front of the driver and perpendicular to the ground. It should be noted that the driver's eye's focal point generally refers to a defined area, such as a square area with sides of 50cm, located 8 meters in front of the driver's eyes. It is understood that the aforementioned square area is merely an example, and the shape of the focal point area can vary greatly; this embodiment does not list them all. It is understood that when the human eye is in the focal point, objects at that focal point can be clearly seen. In some embodiments, there is a correlation between vehicle speed and the driver's eye's focal point; the distance between the focal point and the driver's eyes is positively correlated with vehicle speed. That is, the faster the vehicle speed, the farther the driver's eye's focal point; the slower the vehicle speed, the closer the driver's eye's focal point.

[0069] In step 102, the position of the target virtual image on the head-up display is determined based on the focus position.

[0070] In this embodiment, the target virtual image position corresponds to the focal position. It should be noted that the correspondence between the target virtual image position and the focal position means that the center of the target virtual image position and the center of the focal position approximately coincide or completely coincide, so that the virtual image presented at the target virtual image position can meet the driver's observation needs at the focal position. It can be understood that the virtual image position refers to the location of the virtual image formed by the optical components of the head-up display in front of the vehicle's windshield, generally within a defined area. It should be noted that in this embodiment, the distance between the target virtual image position and the driver's eye can be between 2m and 15m.

[0071] In step 103, the curvature adjustment range is determined based on the initial virtual image position and the target virtual image position of the head-up display.

[0072] It is understandable that different virtual image positions can correspond to different curvatures. In some embodiments, the difference in horizontal distance between the initial virtual image position and the target virtual image position is correlated with the curvature adjustment amplitude. The initial virtual image position is the virtual image position before curvature adjustment, and the target virtual image position is the virtual image position after curvature adjustment. It should be noted that, as... Figure 3 As shown, the optical components of the head-up display include at least one primary curved mirror and at least one secondary reflector. (This application...) Figure 3 The diagram shown is a schematic of an optical assembly consisting of a primary curved mirror 403 (which is a concave mirror) and a secondary reflecting mirror 402 (which is a convex mirror). Figure 3 The diagram shows the optical paths for three different curvatures of the principal surface mirrors.

[0073] It should be noted that the imaging principle of the principal curved mirror conforms to the following formula:

[0074] 1 / p + 1 / q = 1 / f

[0075] Where p is the image distance, q is the object distance, and f is the focal length of the curved mirror. It should be noted that, combined with... Figure 3 As shown, the larger the focal length of the primary curved mirror 403, the smaller the curvature of the primary curved mirror 403.

[0076] In step 104, an adjustment command is generated based on the target virtual image position and sent to the target drive mechanism.

[0077] It should be noted that, as Figure 3As shown, the head-up display in this embodiment generally includes a connected target driving mechanism (not shown) and a main curved mirror 403. The target driving mechanism is electrically connected to the controller, enabling the mutual transmission of signals, commands, and data between the controller and the target driving mechanism. The adjustment command instructs the target driving mechanism to adjust the curvature of the main curved mirror of the head-up display to the target curvature according to the curvature adjustment range, so that the position of the virtual image formed by the head-up display is located at the target virtual image position. For example, it can be combined with... Figure 3 As shown, the slower the vehicle speed, the closer the driver's eye 405 focuses, and the closer the virtual image 406 is. In other words, the closer the target virtual image is to the driver's eye 405, the smaller the target curvature of the corresponding primary curved mirror 403. Conversely, the slower the vehicle speed, the farther the driver's eye 405 focuses, and the farther the virtual image 406 is. In other words, the farther the target virtual image is to the driver's eye 405, the larger the target curvature of the corresponding primary curved mirror 403.

[0078] As can be seen from the above, the adjustment method of the head-up display system provided in this application embodiment can adjust the position of the virtual image formed by the head-up display in a timely manner according to the different eye focusing positions corresponding to different vehicle speeds. In other words, the position of the virtual image formed by the head-up display can be adjusted to a position suitable for human eye observation based on vehicle speed. This satisfies the human eye's observation needs for the virtual image at different focusing positions, allowing the driver to more accurately obtain different information corresponding to the virtual image from the windshield, avoiding driver eye fatigue, and improving driver safety.

[0079] Combination Figures 1 to 6 As shown in the figure, this application embodiment provides an adjustment method for a head-up display system. This method can be applied to a head-up display system, which may include an electrically connected head-up display and a controller. The method can be executed by the controller. The adjustment method for the head-up display system includes steps 201 to 206.

[0080] In step 201, the driver's eye focus position is determined based on the vehicle speed.

[0081] It should be noted that step 201 is the same as step 101.

[0082] In some embodiments, the driver's eye focus position corresponding to the target speed range is determined based on the vehicle speed and the target speed range to which the vehicle speed belongs. It should be noted that the driver's speed often fluctuates slightly during driving. By determining the focus position based on the target speed range, it is possible to ensure that the driver's eye focus position remains the same when the vehicle speed fluctuates within a certain range. Consequently, in step 202 below, the target virtual image position determined by the focus position corresponding to the same speed range is also the same. This ensures both timely adjustment of the target virtual image position and prevents the driver from frequently adjusting the target virtual image position during driving. In other words, the driver can see a stable virtual image on the windshield, reducing the likelihood of dizziness or difficulty seeing the virtual image due to frequent image movement, thus improving driving safety.

[0083] In some embodiments, the adjustment method for the head-up display system further includes: acquiring vehicle speed and information about the vehicle's surroundings. Based on the vehicle speed and the information about the vehicle's surroundings, the driver's eye focus position is determined. It should be noted that there is also a correlation between the information about the vehicle's surroundings and the driver's eye focus position, and this correlation can be measured based on relevant historical data.

[0084] In some embodiments, the vehicle's surroundings information includes information on moving objects, stationary objects, and environmental information within a preset range around the vehicle. Moving object information may include the number and speed of moving objects such as vehicles and pedestrians, while stationary object information may include the number and height of stationary objects such as buildings, signs, and traffic lights. It should be noted that the focus of the human eye is related to the complexity of the surroundings information; the simpler the surroundings information, the farther the human eye focuses; the more complex the surroundings information, the closer the human eye focuses. For example, the more moving objects there are, the closer the human eye focuses; the fewer moving objects there are, the farther the human eye focuses.

[0085] In some embodiments, the adjustment method for the head-up display system further includes: determining an initial downward viewing angle corresponding to the driver's eye level. Figure 5 As shown, the angle between the line 409 connecting the center point of the driver's eye (405) and the center point of the virtual image (406) in front of the vehicle, and the horizontal ray 408 passing through the center of the eye (405) is called the downward angle. Combined with... Figure 4 As shown, the height of the driver's eye level is the distance from the center point of the eye box of the driver's eye (405) to the upper surface of the seat. Different heights of the driver's eye (405) will result in different downward viewing angles. It should be noted that the height of the driver's eye level can be determined using image acquisition devices such as cameras.

[0086] Based on the initial downward viewing angle, a first rotation command is determined. This first rotation command instructs the rotation mechanism to rotate the main curved mirror to adjust the downward viewing angle to the initial downward viewing angle. It should be noted that the head-up display in this embodiment includes a rotation mechanism (not shown in the figure), which is connected to the main curved mirror 403. It is understood that by adjusting the downward viewing angle to the initial downward viewing angle, the driver's visual needs for observing the virtual image can be met, avoiding situations where the virtual image is too high or too low and exceeds the driver's field of vision, preventing the driver from seeing the virtual image. Figure 4 Taking the example shown, the principle of adjusting the downward viewing angle is as follows: the higher the driver's eye level 405 is, the larger the downward viewing angle. The controller will control the rotating mechanism to drive the main curved mirror 403 to rotate counterclockwise, so as to adjust the downward viewing angle to a position that conforms to human eye observation. If the driver's eye level 405 is lower, the downward viewing angle is smaller. The controller will control the rotating mechanism to drive the main curved mirror 403 to rotate clockwise, so as to adjust the downward viewing angle to a position that conforms to human eye observation.

[0087] In step 202, the position of the target virtual image on the head-up display is determined based on the focus position.

[0088] The position of the target virtual image corresponds to the focusing position. It should be noted that step 202 is similar to step 201, and will not be described in detail here.

[0089] In step 203, the curvature adjustment range is determined based on the initial virtual image position and the target virtual image position of the head-up display.

[0090] It should be noted that steps 203 and 103 are similar, and will not be described in detail here in the embodiments of this application.

[0091] In step 204, an adjustment command is generated based on the target virtual image position and sent to the target drive mechanism.

[0092] The adjustment command instructs the target drive mechanism to adjust the curvature of the head-up display's main curved mirror to the target curvature according to the curvature adjustment range, so that the position of the virtual image formed by the head-up display is located at the target virtual image position. It should be noted that step 204 is similar to step 104. It should also be noted that the faster the vehicle speed, the farther the focal point of the human eye is, i.e., the farther the target virtual image position is, and thus the smaller the target curvature.

[0093] It should be noted that step 204 can be implemented in multiple ways. Two of these methods are listed below.

[0094] In some embodiments, the target driving mechanism is a stretching mechanism, and the process of adjusting the curvature of the main curved mirror using the stretching mechanism includes the following two steps:

[0095] Step 1: Generate the first adjustment command based on the target virtual image position.

[0096] Step 2: Send the first adjustment command to the stretching mechanism. The main curved mirror is a concave mirror, and the stretching mechanism is connected to the center of the convex surface of the main curved mirror. The first adjustment command instructs the stretching mechanism to pull the main curved mirror along its normal, so that the curvature of the main curved mirror reaches the target curvature. It is understood that using a stretching mechanism allows for more convenient and efficient adjustment of the curvature of the main curved mirror. It should be noted that in this embodiment, the concave surface of the main curved mirror is used to reflect light.

[0097] In some embodiments, the stretching mechanism includes a first motor and a stretching member connected together. The stretching member extends or shortens as the first motor rotates. The first motor is electrically connected to a controller. The controller sends a first adjustment command to the first motor, wherein the first adjustment command includes a first target rotation speed of the first motor and a first rotation signal. Based on the first adjustment command, the first motor rotates according to the first target rotation speed, thereby causing the stretching member to stretch or shorten by a distance corresponding to the first target rotation speed. It should be noted that there is a corresponding relationship between curvature and the tension applied to the main curved mirror by the stretching mechanism, and the tension is related to the rotation speed of the first motor. That is, based on the target curvature, the target tension corresponding to the target curvature is determined, and then the first target rotation speed of the first motor corresponding to the target tension is determined. Thus, after the first motor rotates according to the first target rotation speed, the curvature of the main curved mirror can be adjusted to the target curvature.

[0098] Secondly, in some other embodiments, the target driving mechanism is a plurality of pushing mechanisms, and the process of adjusting the curvature of the main curved mirror using the plurality of pushing mechanisms includes the following two steps:

[0099] Step 1: Generate a second adjustment command based on the target virtual image position.

[0100] Step 2: Send the second adjustment command to multiple pushing mechanisms. The main curved mirror is a concave mirror, and the pushing mechanism abuts against the edge region of the convex surface of the main curved mirror. The second adjustment command instructs the pushing mechanism to move towards or away from the center of the main curved mirror, so that the curvature of the main curved mirror reaches the target curvature. It is understood that using pushing mechanisms allows for more convenient and efficient adjustment of the curvature of the main curved mirror. It should be noted that in this embodiment, the concave surface of the main curved mirror is used to reflect light. The number of pushing mechanisms can be adjusted according to requirements. In some embodiments, the edge region is the area near the apex of the main curved mirror or the midpoint region of each edge of the main curved mirror.

[0101] In some embodiments, the pushing mechanism includes a second motor, a pushing member, and a gripper. The second motor and the pushing member are connected, and the pushing member is connected to the gripper. The gripper is used to hold the edge region of the main curved mirror. The second motor is electrically connected to a controller. The controller sends a second adjustment command to the second motor, wherein the second adjustment command includes a second target rotation number of the second motor and a second rotation signal. Based on the second adjustment command, the second motor rotates according to the second target rotation number. The second motor drives the pushing member to move, and the pushing member can then drive the gripper to push the main curved mirror until the curvature of the main curved mirror is adjusted to the target curvature. It should be noted that there is a corresponding relationship between the curvature and the thrust applied to the main curved mirror by the pushing mechanism, and the thrust is related to the rotation number of the second motor. That is, based on the target curvature, the target thrust corresponding to the target curvature is determined, and then the second target rotation number of the second motor corresponding to the target thrust is determined. Thus, after the second motor rotates according to the second target rotation number, the curvature of the main curved mirror can be adjusted to the target curvature.

[0102] In step 205, the target's downward angle is determined based on the initial downward angle and focus position.

[0103] It should be noted that there is a correlation between the focusing position and the downward angle of view. The distance between the focusing position and the driver's eye is negatively correlated with the downward angle of view. That is, the farther the driver's eye focuses, the smaller the downward angle of view; the closer the driver's eye focuses, the larger the downward angle of view. It should also be noted that in the embodiments of this application, the downward angle of view can be between 1.5° and 4°.

[0104] In step 206, a second rotation command is determined based on the target's downward viewpoint.

[0105] The second rotation command instructs the rotation mechanism to rotate the primary curved mirror, adjusting the lower viewing angle from the initial lower viewing angle to the target lower viewing angle. It should be noted that timely adjustment of the lower viewing angle according to the human eye's focusing position meets the human eye's need to observe the virtual image from different focusing positions, making it easier for the driver to clearly view the information represented by the virtual image, thereby further improving driver safety. It should be noted that the rotation mechanism is electrically connected to the controller. It should also be noted that the rotation mechanism can drive the primary curved mirror to rotate around a tangent passing through the center of the primary curved mirror as its rotation axis; for example, the rotation mechanism can drive the primary curved mirror to rotate clockwise or counterclockwise.

[0106] It should be noted that, with Figure 4 Taking the optical component shown as an example, combined with Figure 5The optical path diagram shown for the driver's eye 405 at the same height further illustrates the principle of the rotating mechanism rotating the master curved mirror. When the vehicle 407 speeds up, causing the focusing position to move further away and thus the downward angle of view to decrease (i.e., the target downward angle of view is smaller than the initial downward angle of view), the second rotation command instructs the rotating mechanism to drive the master curved mirror 403 to rotate clockwise, thereby adjusting the initial downward angle of view to the target downward angle of view. When the vehicle speeds down, causing the focusing position to move closer and thus the downward angle of view to increase (i.e., the target downward angle of view is larger than the initial downward angle of view), the second rotation command instructs the rotating mechanism to drive the master curved mirror 403 to rotate counterclockwise, thereby adjusting the initial downward angle of view to the target downward angle of view.

[0107] It is understood that the head-up display system adjustment method provided in this application embodiment determines the focal position of the human eye based on the vehicle speed, determines the position of the target virtual image suitable for human eye observation based on the focal position, and then uses a controller to control a stretching mechanism or a pushing mechanism to adjust the curvature of the main curved mirror, and / or controls a rotating mechanism to rotate the main curved mirror, so as to adjust the position of the virtual image to the position corresponding to the focal position of the human eye, and adjust the downward viewing angle to the angle corresponding to the focal position of the human eye. This method enables timely and flexible adjustment of the position of the virtual image generated by the head-up display according to different vehicle speeds, which can meet the needs of the human eye to observe the virtual image at different focal positions, avoid driver eye fatigue, and improve driving safety.

[0108] Secondly, combining Figures 1 to 6 As shown, this application embodiment also provides a head-up display system, the system including a controller 301 and a head-up display 302, the controller 301 and the head-up display 302 are electrically connected, wherein the head-up display includes a connected target drive mechanism (not shown in the figure) and a main curved mirror 403, and light is projected onto the windshield 404 of the vehicle through the main curved mirror.

[0109] The controller is used for:

[0110] Determine the driver's eye focus position based on vehicle speed;

[0111] Based on the focus position, the position of the target virtual image of the head-up display is determined, wherein the position of the target virtual image corresponds to the focus position;

[0112] The curvature adjustment range is determined based on the initial virtual image position and the target virtual image position of the head-up display;

[0113] Based on the target virtual image position, generate adjustment commands;

[0114] Send the adjustment command to the target drive mechanism;

[0115] The target drive mechanism is used to adjust the curvature of the main curved mirror to the target curvature according to the curvature adjustment range based on the adjustment command, so that the position of the virtual image formed by the head-up display is located at the target virtual image position.

[0116] In some embodiments, the target drive mechanism is a tensioning mechanism, and the tensioning mechanism is electrically connected to the controller.

[0117] The controller is also used to: generate a first adjustment command based on the position of the target virtual image; send the first adjustment command to the stretching mechanism, wherein the main curved mirror is a concave mirror, and the stretching mechanism is connected to the center of the convex surface of the main curved mirror; the stretching mechanism is used to pull the main curved mirror along the normal of the main curved mirror based on the first adjustment command, so that the curvature of the main curved mirror reaches the target curvature.

[0118] In some embodiments, the target drive mechanism is a push mechanism, and the push mechanism is electrically connected to the controller.

[0119] The controller is also used to: generate a second adjustment command based on the position of the target dotted line; and send the second adjustment command to the pushing mechanism, wherein the main curved mirror is a concave mirror, and the pushing mechanism abuts against the edge region of the convex surface of the main curved mirror;

[0120] The actuating mechanism is used to move toward or away from the center of the primary curved mirror based on a second adjustment command, so that the curvature of the primary curved mirror reaches the target curvature.

[0121] It should be noted that the composition and corresponding functions of the head-up display system in this application embodiment are the same as those of the head-up display system mentioned in the adjustment method of the head-up display system in the first aspect of this application embodiment; the functions performed by the controller are the same as those performed by the controller in the adjustment method of the head-up display system in the first aspect of this application embodiment; the type or composition of the target driving mechanism and the functions it implements are the same as those of the target driving mechanism in the adjustment method of the head-up display system in the first aspect of this application embodiment, and will not be repeated here.

[0122] This application embodiment utilizes a head-up display system that can adjust the curvature and / or angle of the head-up display's main curved mirror based on vehicle speed, thereby meeting the human eye's need to observe virtual images at different focusing positions and improving the safety of driving.

[0123] Thirdly, embodiments of this application also provide a vehicle, the vehicle including a head-up display system as described in any one of the embodiments of the second aspect of this application. It should be noted that the composition and function of the head-up display system in this embodiment are the same as those in the head-up display system of the second aspect, and will not be repeated here. Furthermore, the head-up display system includes a controller, which is used to execute any step of the adjustment method for the head-up display system in the first aspect.

[0124] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only.

[0125] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A method for adjusting a head-up display system, characterized in that, The method includes: Determine the driver's eye focus position based on vehicle speed; Based on the focusing position, the target virtual image position of the head-up display is determined, wherein the target virtual image position corresponds to the focusing position; The curvature adjustment range is determined based on the initial virtual image position and the target virtual image position of the head-up display; Based on the target virtual image position, an adjustment command is generated and sent to the target driving mechanism. The adjustment command instructs the target driving mechanism to adjust the curvature of the main curved mirror of the head-up display to the target curvature according to the curvature adjustment range, so that the position of the virtual image formed by the head-up display is located at the target virtual image position. The step of generating the adjustment command based on the target virtual image position and sending the adjustment command to the target driving mechanism includes: generating a first adjustment command based on the target virtual image position; sending the first adjustment command to a stretching mechanism, wherein the main curved mirror is a concave mirror, and the stretching mechanism and... The convex surfaces of the primary curved mirror are connected at their centers. The first adjustment command instructs the stretching mechanism to pull the primary curved mirror along the normal of the primary curved mirror so that the curvature of the primary curved mirror reaches the target curvature. Alternatively, based on the target virtual image position, a second adjustment command is generated. The second adjustment command is sent to multiple pushing mechanisms, wherein the primary curved mirror is a concave mirror, and the pushing mechanism abuts against the edge region of the convex surface of the primary curved mirror. The second adjustment command instructs the pushing mechanism to move toward or away from the center of the primary curved mirror so that the curvature of the primary curved mirror reaches the target curvature.

2. The adjustment method for the head-up display system according to claim 1, characterized in that, Determining the driver's eye focus position based on vehicle speed includes: Obtain the vehicle speed and information about the vehicle's surroundings; Based on the vehicle speed and information about the vehicle's surroundings, the driver's eye focus position is determined.

3. The adjustment method for the head-up display system according to claim 1, characterized in that, The method further includes: Based on the height position of the driver's eyes, determine the initial downward viewing angle corresponding to the height position; Based on the initial lower viewpoint, a first rotation command is determined, wherein the first rotation command is used to instruct the rotation mechanism to rotate the main curved mirror to adjust the lower viewpoint to the initial lower viewpoint.

4. The adjustment method for the head-up display system according to claim 3, characterized in that, The method further includes: Based on the initial downward viewing angle and the focal position, determine the target's downward viewing angle; Based on the target lower viewpoint, a second rotation command is determined, wherein the second rotation command is used to instruct the rotation mechanism to rotate the main curved mirror to adjust the lower viewpoint from the initial lower viewpoint to the target lower viewpoint.

5. A head-up display system, characterized in that, The system includes a controller and a head-up display, which are electrically connected. The head-up display includes a connected target drive mechanism and a main curved mirror, through which light is projected onto the windshield of the vehicle. The controller is used for: Determine the driver's eye focus position based on vehicle speed; Based on the focusing position, the target virtual image position of the head-up display is determined, wherein the target virtual image position corresponds to the focusing position; The curvature adjustment range is determined based on the initial virtual image position and the target virtual image position of the head-up display; Based on the position of the target virtual image, an adjustment command is generated; The adjustment command is sent to the target drive mechanism, which is a tension mechanism or a push mechanism. The tension mechanism is electrically connected to the controller, and the push mechanism is electrically connected to the controller. The target driving mechanism is used to adjust the curvature of the main curved mirror to a target curvature according to the adjustment command, so that the position of the virtual image formed by the head-up display is located at the target virtual image position; the controller is further used to: generate a first adjustment command based on the target virtual image position; send the first adjustment command to the stretching mechanism, wherein the main curved mirror is a concave mirror, and the stretching mechanism is connected to the center of the convex surface of the main curved mirror; the stretching mechanism is used to pull the main curved mirror along the normal of the main curved mirror according to the first adjustment command, so that the curvature of the main curved mirror reaches the target curvature; or, generate a second adjustment command based on the target virtual image position; send the second adjustment command to the pushing mechanism, wherein the main curved mirror is a concave mirror, and the pushing mechanism abuts against the edge region of the convex surface of the main curved mirror; the pushing mechanism is used to move towards or away from the center of the main curved mirror according to the second adjustment command, so that the curvature of the main curved mirror reaches the target curvature.

6. A vehicle, characterized in that, The vehicle includes the head-up display system as described in claim 5.

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