An electric motorcycle vehicle-mounted head-up display system and instrument panel

Abstract

The application provides an electric motorcycle vehicle-mounted head-up display system and an instrument panel, and the electric motorcycle vehicle-mounted head-up display system comprises an image generation component, an optical display system and a control component; the image generation component is used for generating image content; the optical display system comprises a free curved surface or a spherical imaging screen, a plane half-transmission half-reflection mirror and a display window, and then is projected onto a windshield in front of a line of sight of a rider; the control component is used for adjusting the position and the angle of display content in the display window in real time to adapt to a riding environment. The application generates image content through a TFT-LCD, enlarges TFT display content to 2-50 times through the imaging screen, and enables a driver to observe the enlarged imaging content through the windshield. In this way, the driver can see clear and enlarged display content which is easy to identify, does not need to look down at the instrument panel data, and the driving safety is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of intelligent driving technology, and in particular to an electric motorcycle in-vehicle head-up display system and instrument panel. Background Technology

[0002] Head-up display (HUD) technology for electric motorcycles is one of the important directions in the intelligent development of two-wheeled vehicles in recent years. It is a technology device that can project key driving information into the rider's field of vision, aiming to improve riding safety and user experience. Electric motorcycle HUD display technology is usually integrated into the motorcycle's dashboard or windshield, using AR (augmented reality) technology to project information in front of the rider's line of sight.

[0003] Currently, while HUD display technology for electric motorcycles is rapidly developing towards higher brightness, lower power consumption, and greater intelligence, the high cost of advanced technologies limits their adoption in mid-to-low-end models. Furthermore, displaying too much information can distract riders and affect safety. Most importantly, electric motorcycle dashboards use traditional LCD electronic displays with small screens, posing a safety hazard as riders look down at the dashboard. Summary of the Invention

[0004] To address the aforementioned problems, the present invention aims to provide an in-vehicle head-up display system and instrument panel for electric motorcycles.

[0005] This invention provides an in-vehicle head-up display system for electric motorcycles, comprising: an image generation component, an optical display system, and a control component;

[0006] The image generation component includes a thin-film transistor liquid crystal display (TFT-LCD) for generating image content;

[0007] An optical display system includes a curved or spherical imaging screen, a planar semi-transparent mirror, and a display window. The imaging screen is located on one side of the thin-film transistor liquid crystal display (TFT-LCD), and the planar semi-transparent mirror is located on the other side of the TFT-LCD. The image content generated by the TFT-LCD is reflected onto the imaging screen via the planar semi-transparent mirror. The imaging screen magnifies the image content by 2 to 50 times to form a magnified virtual image, and projects the magnified virtual image onto the display window. At the same time, the image transmitted through the planar semi-transparent mirror is projected onto the windshield in front of the cyclist's line of sight.

[0008] The control component, located on one side of the electric motorcycle's onboard head-up display system, includes multiple types of sensors for adjusting the position and angle of the displayed content in the display window in real time to adapt to the riding environment.

[0009] Optionally, the control component integrates a gyroscope, a light sensor, an accelerometer and / or a GPS module, for collecting vehicle speed, attitude, ambient light data in real time, to dynamically adjust the projection position, brightness and content.

[0010] Optionally, a wireless transmission module is further included, which communicates with a smart mobile device, a vehicle-mounted ECU and external sensors based on Bluetooth or Mesh network protocol.

[0011] The external sensors include a radar and a camera.

[0012] Optionally, a multifunctional integrated interface is further included, which supports navigation, voice control, dashboard data fusion display and has an OTA upgrade function.

[0013] The application further provides an electric motorcycle dashboard, which comprises a main body framework, a windshield and the electric motorcycle HUD system.

[0014] The windshield is located at the front end of the electric motorcycle HUD system, and has a transparent surface for displaying the image projected by the electric motorcycle HUD system.

[0015] Optionally, an adjusting motor is further arranged at the rear of the electric motorcycle HUD system, for adjusting the display angle of the electric motorcycle HUD system.

[0016] The electric motorcycle HUD system HUD of the embodiment of the application generates image content through a TFT-LCD, and the reflector is a spherical curved imaging screen, which can magnify the TFT display content by 2-50 times, and the magnified virtual image can be observed by the driver through a display window, and can also be projected onto the windshield located in front of the driver's line of sight, so that the driver can see the clear and magnified display content and easily identify the display content, and does not need to lower the head to observe the dashboard data, and the driving safety is greatly improved. Meanwhile, the virtual image is fused with the real scene of the road, and the driver can more intuitively observe the navigation information and other content.

[0017] The above and other objects, advantages and features of the application will become more apparent from the following detailed description of the preferred embodiments of the application when read in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0018] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments in conjunction with the accompanying drawings. The accompanying drawings are intended to illustrate the preferred embodiments and should not be considered limiting of the application. Indeed, the application can vary from the preferred embodiments shown and described while still being deemed to fall within the scope of the application as disclosed in the appended claims. In the drawings, like reference numerals refer to similar elements throughout the several views.

[0019] Figure 1 is a schematic diagram of an electric motorcycle vehicle head-up display system according to an embodiment of the present application;

[0020] Figure 2 is a schematic diagram of imaging principle of an optical display system according to an embodiment of the present application;

[0021] Figure 3 is a light path diagram of an optical display system according to an embodiment of the present application;

[0022] Figure 4 is a schematic diagram of an electric motorcycle instrument panel according to an embodiment of the present application;

[0023] wherein 11 is a thin film transistor liquid crystal display (TFT-LCD), 21 is an imaging screen, 22 is a planar semi-transmission semi-reflection mirror, 23 is a display window, 30 is a main body structure, 40 is a windshield, and 50 is an adjusting motor. DETAILED DESCRIPTION

[0024] Embodiments of the present application will be described below with reference to the accompanying drawings, and those skilled in the art should understand that these embodiments are only used to explain the present application, but are not limiting.

[0025] An electric motorcycle vehicle head-up display system (HUD) according to an embodiment of the present application is provided. The electric motorcycle vehicle HUD display technology is usually integrated on the instrument panel or the front windshield 40 of the motorcycle, and information is projected in front of the rider's line of sight through AR augmented reality technology. As shown in the figure, Figure 1 The electric motorcycle vehicle head-up display system according to an embodiment of the present application includes an image generation component, an optical display system, and a control component.

[0026] The image generation component includes a thin film transistor liquid crystal display (TFT-LCD) 11 for generating image content. The TFT-LCD screen can be regarded as a layer of liquid crystal sandwiched between two glass substrates. The upper glass substrate is combined with a color filter, and the lower glass has a transistor embedded on it. When current passes through the transistor to generate an electric field change, the liquid crystal molecules are deflected, thereby changing the polarization of light, and the polarization film determines the light and dark state of the pixel. In addition, the upper glass is combined with the color filter to form each pixel containing red, blue and green colors. These red, blue and green pixels constitute the image on the screen. The thin film transistor liquid crystal display 11 as an image source controls light by deflecting liquid crystal molecules, realizes color display through a color filter, and generates required image content such as navigation information, vehicle speed and other data to form a clear image. In addition to the above, the image generation component can also use DLP and MEMS laser projection technologies.

[0027] The optical display system includes a freeform or spherical imaging screen 21, a planar semi-transparent mirror 22, and a display window 23, such as... Figure 2 As shown, the imaging screen 21 is located on one side of the thin-film transistor liquid crystal display 11, and the planar transflective mirror 22 is located on the other side of the thin-film transistor liquid crystal display 11. The image content generated by the thin-film transistor liquid crystal display 11 is projected onto the planar transflective mirror 22. The planar transflective mirror 22 is usually installed in front of the thin-film transistor liquid crystal display 11 at a certain angle (usually 45°) to split the light into two parts. Part of the image content is reflected by the planar transflective mirror 22 onto the imaging screen 21, where the imaging screen 21 magnifies the image content by 2 to 50 times to form a magnified virtual image. The imaging screen 21 is positioned at the display window 23, and the image is then displayed in the display window 23. The other part of the image content that reaches the planar transflective mirror 22 continues to propagate forward and is then projected onto the windshield 40 in front of the cyclist's line of sight. Figure 3 The optical path diagram of the optical display system is shown. The diagram only schematically shows the positions of the components; in actual applications, the angles can be adjusted according to different requirements.

[0028] The control components (not shown in the figure) are located on one side of the electric motorcycle's onboard head-up display system and include multiple types of sensors for adjusting the position and angle of the content displayed in the display window 23 in real time to adapt to the riding environment.

[0029] In an optional embodiment of the present invention, the control component integrates a gyroscope, a light sensor, an accelerometer and / or a GPS module to collect vehicle speed, attitude and ambient light data in real time, so as to dynamically adjust the projection position, brightness and content.

[0030] For example, gyroscopes, light sensors, accelerometers, and / or GPS modules can collect sensor data at fixed intervals, including vehicle attitude change data, ambient light data, vehicle acceleration data, electric motorcycle position data, and vehicle speed data. The collected data can be preprocessed, such as through filtering to remove noise interference. For instance, a Kalman filter algorithm can be used to fuse the gyroscope and accelerometer data to more accurately determine the vehicle's attitude and motion state.

[0031] The control component can control the projection adjustment algorithm pre-programmed according to the current speed, attitude and ambient light data of the electric motorcycle. For example, when the speed is low (e.g. below 30 km / h) and the ambient light is dark (below 5000 lux), the control component determines that the vehicle may be in a low-speed driving or parking state in a dark environment, and needs to appropriately reduce the projection brightness and increase the size of the projected content, such as enlarging the vehicle speed display font by 1-2 times, and increasing the size of the navigation icon accordingly, so that the driver can more clearly view the information.

[0032] Further, the control component can also be provided with an image processor inside to dynamically adjust the projection position according to the attitude and speed of the electric motorcycle. For example, when the electric motorcycle turns, the projection content is appropriately offset by a certain angle (e.g. 5°) to the outside of the turning direction of the vehicle according to the roll rate detected by the gyroscope, to compensate for the visual deviation caused by the change of the attitude of the vehicle, and to ensure that the projection information is always accurately presented within the driver's line of sight. At the same time, according to the change of the vehicle speed, the display priority of the projection content is dynamically updated, when the vehicle speed is high, the key information such as vehicle speed and lane deviation warning is displayed first, and the secondary information such as vehicle setting options is hidden or displayed in a small size.

[0033] In an optional embodiment of the present application, the electric motorcycle head-up display system can also include a wireless transmission module, which communicates with smart mobile devices such as mobile phones, vehicle ECUs and external sensors based on Bluetooth or Mesh network protocol; the external sensors include radar and camera.

[0034] In an optional embodiment of the present application, the electric motorcycle head-up display system can also include a multifunctional integrated interface that supports navigation, voice control, and dashcam data fusion display, and has OTA upgrade function. The multifunctional integrated interface can include USB interface, Type-C interface, Wi-Fi module and Bluetooth module. The USB interface and Type-C interface are used to connect external storage devices (such as U disk, mobile phone, etc.) for data transmission and charging, the Wi-Fi module realizes connection with external network to obtain real-time traffic, online navigation map update and OTA upgrade services, and the Bluetooth module is used to pair with the user's mobile phone or other Bluetooth devices to realize voice control, audio playback and other functions.

[0035] When the driver starts navigation, the navigation module determines the current vehicle position by GPS positioning, and displays the current vehicle position, driving direction and planned navigation route on the display window.

[0036] The dashcam module can include a wide-angle camera mounted on the front of the motorcycle, capable of capturing real-time road and traffic conditions ahead of the vehicle. The camera features high-resolution and low-light imaging capabilities, ensuring clear recording of images and videos during driving under various lighting conditions. It includes a built-in storage unit that can cyclically store driving data over a recent period (e.g., 24 hours) and automatically lock the current video segment in the event of a collision or sudden braking to prevent data loss.

[0037] Optionally, the real-time video footage captured by the dashcam can be displayed in a window, allowing the driver to easily check the road conditions ahead. In the event of a collision or other abnormal situation, the system will automatically pop up the dashcam's video playback interface on the display window, showing video clips from a few seconds before to a few seconds after the accident, helping the driver understand the situation at the accident scene.

[0038] This invention also provides an electric motorcycle dashboard, such as... Figure 4 As shown, it includes the main structure 30, the windshield 40, and the electric motorcycle in-vehicle head-up display system described in the above embodiment, such as... Figure 4 As shown, the electric motorcycle head-up display system is located in the middle part of the main structure 30; the windshield 40 is located at the front of the electric motorcycle head-up display system, and the windshield 40 has a transparent surface for displaying the image projected by the electric motorcycle head-up display system.

[0039] An adjustment motor 50 is also installed at the rear of the electric motorcycle's head-up display system for adjusting the display angle of the system. Specifically, the adjustment motor 50 can be connected to the display system's bracket or base via a motor shaft. The motor shaft can be a lead screw structure, which engages with a nut seat on the bracket or base. When the motor rotates, the lead screw rotates, causing the nut seat to move along the lead screw axis, thereby changing the relative angle between the head-up display system and the motorcycle body. This allows for relatively precise linear displacement adjustment, thus achieving accurate angle control. Alternatively, the motor shaft can be connected to a transmission gear, which meshes with a rack fixed on the display system bracket. When the adjustment motor is operating, the transmission gear moves on the rack, pushing the display system bracket to rotate around its fixed point, thereby adjusting the display angle.

[0040] The adjusting motor 50 can be controlled by a control assembly. For example, when the vehicle is in a high-speed driving state, the control assembly detects that the vehicle speed is high through a sensor, in order to ensure that the driver can more clearly and conveniently view the display information, a signal is sent to make the adjusting motor work, and the display angle is adjusted to a position more suitable for viewing during high-speed riding, for example, the virtual image position is slightly moved upward, the degree of the driver looking down to view the display screen is reduced, and visual fatigue during driving is reduced.

[0041] In actual application, a manual adjusting button can also be arranged, and the driver can manually adjust the display angle according to personal preferences and actual riding environment. The adjusting button can be arranged on the handle of the vehicle or other positions convenient for operation, the driver presses the corresponding adjusting button to send a signal to the control assembly, and then the control assembly controls the adjusting motor to work, so as to realize the function of driving the display system to adjust the angle according to the control signal corresponding to the control button.

[0042] The HUD of the electric motorcycle according to the embodiment of the present application generates image content through a TFT-LCD, and the TFT display content can be enlarged to 2-50 times through the spherical curved imaging screen 21 to form an enlarged virtual image. The driver can observe the imaging content through the display window 23, and at the same time, the imaging content can also be projected onto the windshield 40 in front of the driver's line of sight. In this way, the driver can see clear and enlarged display content that is easy to identify, and the driving safety is greatly improved. At the same time, the virtual image is fused with the actual road scene, and the driver can more intuitively observe the navigation information and other content. That is, the position and size of the virtual image are reasonably set to match the actual road scene. For example, the navigation information is displayed in the virtual image in the form of an arrow, and the direction and position of the arrow and other information can be determined according to the actual driving route and the surrounding environment of the vehicle. The driver can more intuitively determine the driving direction and other operations according to the navigation information in the virtual image, and the driving convenience and safety are improved.

[0043] The above only describes the preferred embodiments of the present application, and the protection scope of the present application is not limited to the above-mentioned embodiments. Any technical solutions falling within the concept of the present application shall fall within the protection scope of the present application. It should be noted that, for ordinary technical personnel in the technical field, some improvements and refinements without departing from the principles of the present application shall also be considered as the protection scope of the present application.

Claims

1. A head-up display system for electric motorcycles, characterized in that, include: Image generation components, optical display system, and control components; The image generation component includes a thin-film transistor liquid crystal display (TFT-LCD) (11) for generating image content; An optical display system includes a freeform or spherical imaging screen (21), a planar semi-transparent mirror (22), and a display window (23). The imaging screen (21) is located on one side of the thin-film transistor liquid crystal display, and the planar semi-transparent mirror (22) is located on the other side of the thin-film transistor liquid crystal display. The image content generated by the thin-film transistor liquid crystal display is reflected onto the imaging screen (21) via the planar semi-transparent mirror (22). The imaging screen (21) magnifies the image content by 2 to 50 times to form a magnified virtual image, and projects the magnified virtual image onto the display window (23). At the same time, the image transmitted through the planar semi-transparent mirror (22) is projected onto the windshield (40) in front of the rider's line of sight. The control component is located on one side of the electric motorcycle's head-up display system. The control component integrates a gyroscope, a light sensor, an accelerometer, and a GPS module to adjust the position and angle of the displayed content in the display window (23) in real time to adapt to the riding environment. The gyroscope, light sensor, accelerometer, and GPS module are used to collect vehicle speed, attitude, and ambient light data in real time to dynamically adjust the projection position, brightness, and content. The control component is equipped with an image processor to dynamically adjust the projection position according to the electric motorcycle's attitude and speed. At the same time, the display priority of the projection content is dynamically updated according to the vehicle speed. When the vehicle speed is high, the key information of vehicle speed and lane departure warning is displayed first, while the secondary information of vehicle setting options is hidden or minimized. An adjustment motor (50) is also provided at the rear of the electric motorcycle head-up display system, which is used to adjust the display angle of the electric motorcycle head-up display system. The adjustment motor (50) is controlled by the control component. When the vehicle is in a high-speed driving state, the control component sends a signal to make the adjustment motor work and adjust the display angle to a position more suitable for viewing when riding at high speed.

2. The electric motorcycle in-vehicle head-up display system according to claim 1, characterized in that, It also includes a wireless transmission module, which communicates with smart mobile devices, vehicle ECUs and external sensors based on Bluetooth or Mesh network protocols; The external sensors include radar and cameras.

3. The electric motorcycle in-vehicle head-up display system according to claim 1, characterized in that, It also includes a multi-functional integrated interface that supports navigation, voice control, and fusion display of dashcam data, and has OTA upgrade capabilities.

4. An instrument panel for an electric motorcycle, characterized in that, The system includes a main frame (30), a windshield (40), and an electric motorcycle head-up display system as described in any one of claims 1-3, wherein the electric motorcycle head-up display system is disposed in the middle part of the main frame (30); The windshield (40) is located at the front of the electric motorcycle head-up display system. The windshield (40) has a transparent surface for displaying the image projected by the electric motorcycle head-up display system.

Images