Start-stop management method, display device, storage medium and vehicle

Abstract

The invention relates to the technical field of projection display, in particular to a start-stop management method, display equipment, a storage medium and a vehicle. According to the application, the KL15 signal of the vehicle where the HUD display device is located and the sensing signal of the steering wheel of the vehicle are respectively obtained, and the start and stop of the HUD display device are adaptively controlled according to the ignition and flameout triggering conditions of the vehicle engine and the holding and loosening use conditions of the steering wheel of the vehicle by a user, so that the working state management of the device without human intervention is realized. According to the method and the device, automatic management of start and stop of the HUD display equipment can be intelligently realized, the start of the equipment can be adaptively carried out in the background according to behaviors of a user, and the actual perception experience of the user is better.

Description

Technical Field

[0001] The present application relates to the field of projection display technology, and in particular to a start-stop management method, a display device, a storage medium, and a vehicle. Background Art

[0002] HUD (Head Up Display) is a new way to achieve in-vehicle display by using reflection on the vehicle windshield. Specifically, the display light is emitted by the optical engine of the HUD display device, and is projected onto the windshield through the corresponding optical lenses to produce a corresponding virtual image, forming an enhanced display effect with the real world outside the windshield. However, the start and stop of the HUD display device often require manual control by the user in the cockpit, such as selecting menu items on the central control screen, etc. This experience is too rigid. In particular, most users currently do not have the habit and need to be proficient in using HUD projection. They often forget to turn it on before driving, and turning it on after the vehicle is ignited will affect the user experience due to poor startup speed. At the same time, if the HUD display device is not turned off in time after being turned on, it will also cause damage to the internal part of the device in extreme conditions such as strong sunlight. Summary of the Invention

[0003] The purpose of this application is to provide a start-stop management method, display device, storage medium and vehicle, which solves the technical problem in the prior art that the start-stop of the HUD display device depends on manual control of the user, the startup speed perceived by the user during the startup process is too slow, and the user experience is poor.

[0004] In order to solve the above technical problems, this application adopts the following technical solutions.

[0005] In a first aspect, the present application provides a start-stop management method, comprising: The HUD display device is configured to include at least a first standby state, a second standby state, and a normal projection state, wherein the first standby state controls the communication interface and / or processor of the HUD display device to be in a normal operation mode, the second standby state includes controlling the communication interface and / or processor of the HUD display device to be in a low power consumption mode, and the normal projection state includes turning on a backlight source and an image source based on the first standby state to project display light onto a vehicle windshield to form a virtual image in front of the vehicle; In response to the vehicle being turned off and in the off state, when the steering wheel of the vehicle is in the gripping state, the HUD display device is controlled to be in the first standby state; when the steering wheel of the vehicle is in the released state, the HUD display device is controlled to be in the second standby state.

[0006] According to the above description, the optional implementation method can realize the automatic start and stop of the HUD display device, preventing the user from forgetting to operate the HUD display device while driving the vehicle, and the HUD display device will make advance preparations based on the user's behavior to improve the perception speed when triggering the projection.

[0007] In an optional implementation of the first aspect, when the steering wheel of the vehicle is in the released state, controlling the HUD display device to be in a state other than the second standby state, the start-stop management method includes: In response to the release state lasting for a time period exceeding a first time threshold, the HUD display device is controlled to be directly shut down.

[0008] According to the above description, an optional implementation method can directly shut down the HUD display device when the user temporarily has no intention of viewing the projected virtual image, thereby avoiding unnecessary power consumption after the user leaves the vehicle.

[0009] In an optional implementation of the first aspect, after controlling the HUD display device to directly shut down, the start-stop management method includes: When the steering wheel of the vehicle is in the gripping state, in response to a duration of the gripping state being less than a second time threshold, keeping the HUD display device in the off state; and in response to a duration of the gripping state exceeding the second time threshold, controlling the HUD display device to be in the first standby state; When the steering wheel of the vehicle is in the released state, the HUD display device is kept in a powered-off state.

[0010] According to the above description, an optional implementation manner may enable the HUD display device to have the ability to switch back to the first standby state through a specific triggering method.

[0011] In an optional implementation of the first aspect, when the steering wheel of the vehicle is in the gripping state, controlling the HUD display device to be in the first standby state includes: In response to the holding state lasting longer than a third time threshold, based on the first standby state, the optical lens angle of the HUD display device is adjusted so that the formed light path meets the needs of the normal projection state.

[0012] According to the above description, an optional implementation manner can adjust the optical lens to the in-position mode in advance in the first standby state.

[0013] In an optional implementation of the first aspect, in response to the duration of the holding state exceeding a second time threshold, controlling the HUD display device to be in the first standby state includes: In response to the main vehicle door being opened within the specific time range of the holding state switching, and in response to the holding state lasting for more than a fourth time threshold, the HUD display device is controlled in advance to be in the first standby state, and the fourth time threshold is less than the second time threshold.

[0014] According to the above description, an optional implementation method can correspond to the user's normal behavior of getting in the car and driving, and start some functions of the HUD display device in the background in advance to improve the perceived startup speed during the formal projection.

[0015] In an optional implementation of the first aspect, the start-stop management method includes: In response to the vehicle being ignited and in the starting state, when the steering wheel of the vehicle is in the gripping state, the HUD display device is controlled to be in the normal projection state; when the steering wheel of the vehicle is in the releasing state, the working state of the HUD display device is controlled according to the duration of the releasing state.

[0016] In an optional implementation of the first aspect, the start-stop management method includes: When the vehicle is ignited, the HUD display device is configured to directly enter the normal projection state.

[0017] In an optional implementation manner of the first aspect, when the vehicle is ignited, the HUD display device is configured to directly enter the normal projection state, including: In response to the HUD display device being in the first standby state, switching from the first standby state to the normal projection state; In response to the HUD display device being in the second standby state, switching from the second standby state to the normal projection state.

[0018] According to the above description, the optional implementation manner can enable the user to perceive that the projection startup is performed following the vehicle startup, and the projection startup is perceived very quickly.

[0019] In an optional implementation manner of the first aspect, when the steering wheel of the vehicle is in a released state, controlling the operating state of the HUD display device according to a duration of the released state includes: In response to the duration of the released state being less than a fifth time threshold, maintaining the current working state of the HUD display device; In response to the release state lasting for a time period exceeding the fifth time threshold, the HUD display device is controlled to be in a standby state.

[0020] According to the above description, the optional implementation can effectively eliminate the false triggering of projection by some vehicles during normal driving.

[0021] In an optional implementation of the first aspect, the standby state, the first standby state, or the second standby state includes: Determine whether to adjust the angle of the reflector of the HUD display device according to the intensity of the external light.

[0022] According to the above description, the optional implementation method improves the adjustment flexibility of the optical lens in the standby state and improves the temperature rise protection capability of the equipment.

[0023] In an optional implementation of the first aspect, the start-stop management method includes: The HUD display device is accompanied by a prompt mode when normally switching the working state in response to the vehicle's start-up state, shutdown state and the gripping state and release state of the vehicle's steering wheel.

[0024] In an optional implementation manner of the first aspect, the prompting method is a specific form of beeping sound or a prompt message on the cockpit central control screen.

[0025] In an optional implementation of the first aspect, the first standby state and / or the second standby state is displayed by the color or flashing frequency of the anti-theft indicator light on the vehicle door or the status indicator light of the HUD display device.

[0026] According to the above description, the optional implementation manner can assist the user in distinguishing between normal start and stop of the HUD display device and start and stop due to abnormality.

[0027] In a second aspect, the present application provides a display device comprising a memory, a processor, and a computer program stored in the memory and running on the processor, wherein the processor implements the steps of the start-stop management method described in the first aspect when executing the computer program.

[0028] In a third aspect, the present application provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by a processor, it implements the steps of the start-stop management method described in the first aspect.

[0029] In a fourth aspect, the present application provides a vehicle comprising the display device described in the second aspect or the computer-readable storage medium described in the third aspect.

[0030] Compared to existing technologies, this application separately obtains the KL15 signal of the vehicle where the HUD display device is located and the sensor signal of the vehicle's steering wheel. It adaptively controls the start and stop of the HUD display device based on the user's triggering of the vehicle's engine ignition and shutdown, as well as the grip and release of the vehicle's steering wheel, to achieve unmanned device operating status management. This application can intelligently and automatically manage the start and stop of the HUD display device. The device can be started adaptively in the background based on the user's behavior, and the user's actual perception experience will also be better. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] To more clearly illustrate the technical solution of this application, the following briefly introduces the drawings required for describing the technical solution. Obviously, the drawings described below are merely examples of the invention, and those skilled in the art can derive other drawings based on these drawings without inventive effort.

[0032] Figure 1 Schematic diagram of HUD projection display in some examples of this application.

[0033] Figure 2 This is a schematic diagram of the circuit architecture for implementing start-stop management in some examples of this application.

[0034] Figure 3 This is a schematic diagram of a circuit with a timing device in some examples of this application.

[0035] Figure 4 This is a schematic diagram of the working state switching when the vehicle ignition is started in some examples of this application.

[0036] Figure 5 This is a schematic diagram of the working state switching when the vehicle ignition is started in some examples of this application.

[0037] Figure 6 This is a schematic diagram of the working state switching when the vehicle is turned off in some examples of this application.

[0038] Figure 7 This is a schematic diagram of the working state switching when the vehicle is turned off in some examples of this application.

[0039] Figure 8 This is a schematic diagram of the working state switching when the vehicle is turned off in some examples of this application.

[0040] Figure 9 This is a schematic diagram of the working state switching when the vehicle is turned off in some examples of this application.

[0041] Figure 10 Schematic diagram of the light sensor settings in some examples of this application.

[0042] Figure 11 This is a schematic diagram of the composition of the HUD display device in some examples of this application.

[0043] Figure 12 This is a schematic diagram of projection display in a vehicle in some examples of this application. DETAILED DESCRIPTION

[0044] The following will describe the present application in detail with reference to the accompanying drawings, but the description is merely some examples recorded in the present application and does not limit the present application. Any changes in structure, method or function made by ordinary technicians in this field based on these examples are included in the scope of protection of the present application.

[0045] It should be noted that the same reference numbers or indices may be used in different examples, but these do not represent absolute structural or functional connections. Furthermore, the terms "first," "second," and so on, which may be mentioned in various examples, are merely for descriptive convenience and do not represent absolute structural or functional distinctions, nor should they be understood as indicating or implying relative importance or the number of corresponding objects. Unless otherwise specified, the term "at least one" in the description refers to one or more, and "a plurality" refers to two or more.

[0046] Additionally, when representing features, the character " / " can indicate an OR relationship between the preceding and following objects. For example, heads-up display / head-up display can be represented as heads-up display or heads-up display. When representing operations, the character " / " can indicate a division relationship between the preceding and following objects. For example, magnification M = L / P can be represented as L (virtual image size) divided by P (image source size). Furthermore, the "and / or" in different examples is simply to describe the relationship between the preceding and following objects. This relationship can include three situations. For example, a concave mirror and / or a convex mirror can be represented as the concave mirror alone, the convex mirror alone, or the concave and convex mirrors simultaneously.

[0047] HUD projection display mainly uses the principle of optical reflection to reflect the imaging light to be displayed through a transparent surface into the viewer's eyes. The human eye can see the virtual image information along the opposite direction of the light. Accordingly, the transparent surface can be the windshield of the vehicle, and the windshield can be used as a display screen to display the navigation instructions of the vehicle, the vehicle's driving speed, etc. Figure 1As shown, the HUD display device may include at least an optical engine 1, a first reflector 2, and a second reflector 3. The optical engine 1 includes a backlight source and an image source (not shown). The backlight source is used to provide illumination and adjust the brightness of the illumination light according to control. For example, the backlight source may be an LED (Light Emitting Diode) or a laser. Under the illumination provided by the backlight source, the image source adjusts the corresponding display content according to control and projects the display light from the surface of the image source. For example, the image source may be an LCD (Liquid Crystal Display), a DMD (Digital Micromirror Device), a MEMS (Micro-Electro-Mechanical System) micromirror, or an LCOS (Liquid Crystal on Silicon). The first reflector 2 and the second reflector 3 can project the display light projected by the optical machine 1 onto the windshield 4, realizing customization of the optical path in a smaller space while meeting different projection display requirements. The first reflector 2 and the second reflector 3 can be set to a concave mirror, a convex mirror, a concave lens, a convex lens, etc. according to the requirements of optical planning, and the surface shape of the lens can be a free-form surface. Optionally, at least one of the first reflector 2 and the second reflector 3 can also be adjusted to a certain degree of angle, thereby changing the projection position of the display light on the windshield 4 to meet the needs of viewers of different heights. The display light of the optical machine 1 is finally reflected on the windshield 4 of the vehicle to form a virtual image 5. When the human eye 6 observes the virtual image 5 facing the windshield 4, it can feel a certain sense of depth, just like looking at a real object at a specific distance outside the windshield. The virtual image 5 can be the navigation instructions content, vehicle speed, etc. as described above. It should be added that, according to the characteristics of different optical machines, the HUD display device can also be provided with a diffuser. In some examples, the HUD display device can also include Fresnel lenses, waveguide optical devices, diffraction optical devices, holographic optical devices, tapered optical fibers, etc.

[0048] As mentioned above, the HUD display device can be integrated into the vehicle to project a virtual image in conjunction with the user's vehicle driving, so that the user can directly view useful information in the forward perspective, eliminating the gap in the forward field of view. Figure 2As shown, when the HUD display device is integrated into a vehicle, it can also collaborate with the vehicle computer to achieve additional functions. Specifically, the HUD display device's processor 91 serves as the device's control center and includes one or more processing units of any type, including but not limited to a microcontroller, a microcontroller, a DSP (Digital Signal Processor), or any combination thereof. Processor 91 is used to generate operational control signals based on a computer program to control other modules and collaborate with corresponding modules to process acquired or inherent data and instructions. Accordingly, processor 91 can exchange information with the vehicle computer 92 via the CAN / LIN interface 9021, allowing the vehicle computer 92 to directly provide the projected content of the HUD display device. The CAN (Controller Area Network) interface is the network data connection port for the controller area network, providing a standard bus for the vehicle's internal control system and embedded industrial control, enabling communication and interaction between control nodes. The LIN (Local Interconnect Network) interface is a low-cost serial communication network defined for automotive distributed electronic systems. It is based on the SCI (UART) data format and adopts a single-master controller / multiple-slave device model. It is suitable for applications that do not have high requirements for network bandwidth, performance, or fault tolerance. In this example, the two are interchangeable. Furthermore, the processor 91 can also send power control signals to the switch 9031 and the power management module 903 via the CAN / LIN interface 9021, so that the processor 91 can actively manage the power supply status of various components in the HUD display device. For example, the IMH signal can serve as a wake-up signal to wake up and turn on the system power when a specific component is in a dormant state. The power management module 903 is responsible for power distribution and conversion. It receives the 12V / 24V power input from the switch 9031 and converts it into 5V, 3.3V, and 1.1V voltages. Figure 2 The power management module 903 can connect to the processor 91, backlight driver chip 9081, and other components, providing them with the power they need to operate. It can also activate specific components in different modes through wake-up procedures, as described in detail below. Optionally, the HUD display device can be powered by a battery pack within the power management module 903 itself, or by the vehicle computer 92 (not shown). For example, this can be achieved by connecting to the KL30 and KL31 terminals to provide power to the vehicle computer 92.

[0049] Reference Figure 1 、 Figure 2In the optical machine responsible for projecting display light, the backlight source 908 and image source 909 receive control from the processor 91. The backlight source 908 is used to provide illumination light and adjust the brightness of the illumination light according to the control of the processor 91 to adjust the projection display brightness of the entire HUD display device. The backlight source 908 and image source 909 cooperate to realize the main function of the optical machine projection display. The backlight source 908 can be an LED (Light Emitting Diode), a laser, etc. In this example, the processor 91 sends a control signal to the backlight driver chip 9081, which provides a driving voltage for the backlight source 908 and controls the brightness of the backlight source 908 under the pulse width signal (control signal) output by the processor 91. At the same time, the backlight source 908 can also be controlled to be temporarily turned off and can be awakened under the management of the power management module 903. Image source 909 is responsible for displaying images of corresponding content and projecting corresponding display light under the control of processor 91. Specifically, processor 91 transmits the video stream required by image source 909 to the image source via an LVDS (Low-Voltage Differential Signaling) interface. For example, if image source 909 is an LCD, it comprises liquid crystals corresponding to a number of pixels. These liquid crystals can rotate under the control of an electric field, thereby changing the direction of light travel and the color displayed. When light emitted by backlight source 908 reaches image source 909, the rotation direction of the liquid crystals determines how the light is transmitted, thereby producing different images and display light containing different display information. Similarly, processor 91 can also temporarily control image source 909 to stop projecting display light, thereby eliminating the visible virtual image in front of the vehicle and reducing overall power consumption of the HUD display device. In addition, the vehicle computer 92 is also connected to the enable (EN) terminal of the switch 9031 in the HUD display device. For example, the vehicle computer 92 can send a KL15 signal to the switch 9031, which can be tied to the vehicle's ignition on / off status and used to control the power supply of low-power devices. In this example, the vehicle computer 92 powers the HUD display device via the KL30 and KL31 power interfaces. The HUD display device's switch 9031 then controls the KL15 signal provided by the vehicle computer 92 or the IMH signal provided by the processor 91. Based on the received signal status, the switch 9031 controls the power input to the power management module 903, which then converts the power to the voltage required by the processor 91 or other components in the HUD display device. The processor 91 controls the backlight 908 and image source 909 based on the display content provided by the vehicle computer 92, and can also control their on / off functions to accommodate different display requirements.Preferably, when the IMH signal controls the entire system power supply to be turned off, the processor 91 and the CAN / LIN interface 9021 can still retain the wake-up function, including monitoring the wake-up signal, etc. Accordingly, after receiving the corresponding wake-up signal, it can support direct switching from low-power mode to normal operation mode when the VCC, VIO and other interfaces are already turned off, that is, these components can be in a state of normal startup processing under normal power consumption.

[0050] like Figure 2 As shown, the vehicle is also provided with a steering wheel sensor 913, which is respectively connected to the processor 91 and the switch 9031 in the HUD display device to provide additional sensor signals for the HUD display device. The steering wheel sensor 913 can be a capacitive sensing layer integrated on the outer frame of the steering wheel, which can accurately identify the user's behavior of holding the steering wheel. For example, when the driver puts his hand on the steering wheel of the vehicle, the steering wheel sensor 913 can send a high-level signal to the processor 91 or the switch 9031. When the steering wheel of the vehicle is not held by the driver, that is, in a loose state, the steering wheel sensor 913 will send a low-level signal to the processor 91 or the switch 9031. As described above, the processor 91 can trigger the execution of different decisions when it obtains different behaviors on the vehicle's steering wheel, and the switch 9031 can also make different power allocation strategies through the power management module 903 when it obtains different signals.

[0051] In some examples, the processor 91 is also connected to a motor for control, and the motor is used to drive the optical lens in the HUD display device to rotate under the control of the processor 91, such as Figure 1 The first reflector 2 in the image processing apparatus is used to change the corresponding optical path, thereby meeting the needs of projection. For example, the optical lens needs to be at different angles to match the start and stop of the HUD display device. For example, when the backflow of sunlight causes the temperature of the image source surface to rise, the optical lens can be driven by a motor to prevent external sunlight from reaching the image source surface. Specifically, the motor is connected to the processor 91 through a motor driver chip. The motor driver chip provides high-performance power output for the motor and can also communicate and control with the processor 91 through interfaces such as SPI (Serial Peripheral Interface). In more examples, the HUD display device may also include an Ethernet interface connected to the processor 91, a GPIO (General-purpose input / output) interface, a running memory, a storage memory, a temperature detection module, a fan, a positioning module, a radar, a camera, etc., which will not be repeated here. It should be noted that Figure 2The modules listed in the description are merely exemplary and do not constitute any limitation. In some examples, the HUD display device may further include other modules. In addition, the modules described above may be implemented in one or more hardware components in different examples, or a single module may be implemented by a combination of multiple hardware components.

[0052] In some examples, a HUD display device integrated into a vehicle can be equipped with start / stop and status switching buttons. These buttons can be physical buttons on the vehicle or virtual buttons on the central control screen. However, in this example, manual user control of the buttons is required to start and stop the HUD display device, and fine-grained switching of the HUD display device's status is often impossible to achieve, thereby meeting various requirements such as power consumption and safety. In some examples, due to the limited eyebox design range of the HUD display device, the virtual image projected by the HUD display device is generally only visible to the driver in the main passenger seat. Therefore, the primary viewer of the virtual image projected by the HUD display device is the driver. It should be noted that the eyebox refers to the conical area between the HUD display device's optical system and the eyeball, and is also the area where the display content meets the optimal optical design specifications. Within the eyebox, the eye can see the full FOV (i.e., the entire image) projected by the HUD. When the human eye is outside this range, severe image distortion, color errors, or even no display may occur. Specifically, the projection of the virtual image is bound to the driver's behavior, that is, the viewing of the virtual image is synchronized with the use of the steering wheel, so the start and stop and state switching of the HUD display device can be controlled based on the use of the steering wheel. When the driver manipulates the steering wheel, he will have a corresponding gripping action. For example, when preparing to start the ignition before driving, he will naturally put one hand on the steering wheel to maintain a grip. For example, the driver must keep his hands on the steering wheel during the driving process. As mentioned above, you can use Figure 2 The steering wheel sensor 913 shown is used to identify the driver's behavior, thereby distinguishing the state of the steering wheel into a gripping state and a releasing state. The gripping state corresponds to the driver being in the main driving position and preparing to drive or driving, while the releasing state corresponds to the driver having left the main driving position or not focusing on the front view. Accordingly, the HUD display device will control the start and stop according to the gripping state or releasing state. For example, when the steering wheel is in the gripping state, the HUD display device is turned on, and when the steering wheel is in the releasing state, the HUD display device is turned off. Figure 2The steering wheel sensor 913 in the system directly provides a signal to the switch 9031 to turn on or off the processor 91. Furthermore, in order to optimize the accuracy of the automatic start and stop of the HUD display device and prevent false triggering caused by the special behavior of the driver on the main driving seat, the HUD display device can be turned on only after the steering wheel is held for a certain period of time, and the HUD display device can be turned off only after the steering wheel is released for a certain period of time. Figure 3 As shown, the steering wheel sensor 913 provides the final trigger signal to the switch 9031 through the timing device 9032, that is, the change in the trigger signal will be sent to the switch 9031 only after the grip state switches to the release state, or after the release state switches to the grip state and remains for a period of time, thereby cooperating with the power management module 903 to cause the system power to be turned on or off. The timing device 9032 can be a dedicated timer. For example, it can start timing when the steering wheel sensor 913 just detects the release state, and send a trigger signal to the switch 9031 when a certain time threshold is reached. If the grip state is detected before the certain time threshold is reached, the timing will be restarted. In some examples, the timing device 9032 can also be a lightweight MCU, etc., which specializes in processing the status information detected on the steering wheel and outputs different decision signals to the switch 9031 by judging the duration of the grip state and the release state. Optionally, the timing device 9032 can be integrated with the steering wheel sensor 913 to improve modularity. In more examples, the steering wheel sensor 913 can first send a direct grip signal and a release signal to the processor 91. The processor 91, as the control center of the HUD display device, can make a timing judgment and provide it to the switch 9031 through the IMH signal.

[0053] In some examples, in order to further make the automated management of the HUD display device more in line with actual application scenarios and meet the user's usage habits, it can be combined with the vehicle's ignition start-up status and flameout status, because in most cases, the user views the virtual image projected by the HUD display device when the vehicle is started and driving, and in the flameout state, most of the time they will quickly leave the main driver's seat. However, special circumstances are not ruled out, such as the user temporarily leaving the main driver's seat after the vehicle ignition is started, or sitting in the main driver's seat to view some projected information after the vehicle is turned off. Accordingly, the vehicle will be monitored when it is started or shut down, and specifically, the vehicle computer can provide a KL15 signal to the HUD display device as described above. At the same time, the working status of the HUD display device will be finely managed based on the status signal provided by the steering wheel sensor 913. Furthermore, the start and stop states of the HUD display device are divided into more refined categories. In addition to the off state when the power is off, the start state of the HUD display device is divided into at least the standby state and the normal projection state. Compared with the standby state, the normal projection state is a relatively complete state of the HUD display device projection display, and the user can normally view the projected virtual image within the range of the eye box. Figure 2Specifically, to meet the requirements of a normal projection state, the HUD display device must first be in normal operating mode, rather than low-power mode, for the processor 91 and CAN / LIN interface 9021 to transmit and receive information normally and drive the optical engine according to the video stream provided by the vehicle computer. Next, the backlight source 908 and image source 909 in the optical engine are both turned on, emitting the display light required for projection under the control of the processor 91. The optical lens providing light guidance is also in an open angle position, i.e., in-position mode, so that the display light emitted by the optical engine can be properly guided to the desired location on the windshield for reflection. In the standby state, because at least some components of the HUD display device are in an inoperative or low-power mode, such as the processor 91, CAN / LIN interface 9021, backlight source 908, image source 909, or optical lens, no display light is projected and reflected on the windshield to form a virtual image observable to the human eye. Accordingly, the standby state can at least serve to reduce the overall power consumption of the HUD display device, and further reduce unnecessary temperature rise inside the HUD display device, avoid long-term damage to the internal components of the device, and more preferably, can process some content that is inconvenient for the user to perceive in the background while the user cannot see the virtual image, or let the user think that the HUD display device is in the off state, reducing unnecessary distraction to the user. In some examples, different standby states are set according to the sensitivity requirements for quickly switching to the normal projection state. Different configuration states are adopted for different components in different standby states, which will be described in detail below. Optionally, a pre-start state is set in addition to the standby state. The pre-start state is a pre-state specifically for increasing the perception speed of entering the normal projection mode. It can be understood as a special standby state that can be configured to be executed when the HUD display device is just powered on.

[0054] In some examples, such as Figure 4As shown, when the user enters the driver's seat and starts the vehicle from an off state using the key or the one-touch ignition feature, the HUD display device is configured to operate in different states depending on the steering wheel's state. This can be determined by sensors installed on the vehicle's steering wheel, as described above. In this example, upon starting the vehicle's ignition, the HUD display device is simultaneously activated and enters the normal projection state. At this point, regardless of whether the steering wheel is held or released, the virtual image begins projecting. This effectively acts as a starting point for both the engine and the HUD display, ensuring that the user seamlessly perceives the HUD display as in operation. Once the HUD display device enters the normal projection state, it switches to the normal projection state based on the steering wheel's state. As long as the driver places their hands on the steering wheel, i.e., a held state is detected, the HUD display device enters the normal projection state. This is specifically divided into two situations: if the HUD display device is currently in the normal projection state, the detected held state will be converted to maintain the HUD display device in the original normal projection state. If a released state detection record was recorded at the previous moment, the release duration will be reset and paused. If the HUD display device is currently in standby mode, it will switch to normal projection mode once the driver detects a gripping state. This means that the virtual image in front of the vehicle is not visible, but the virtual image immediately reappears as the driver places their hands on the steering wheel. Regarding the gripping state of the steering wheel, the HUD display device will directly enter normal projection mode when the vehicle is started, aligning with the user's viewing needs. That is, any gripping state at any time will trigger the HUD display device to project a virtual image.

[0055] When the release state is detected, meaning the driver has removed their hands from the steering wheel, the longer this state lasts, the higher the probability that the driver has left the driver's seat, and accordingly, the need to view the projected virtual image content no longer exists. However, the release state isn't strongly correlated with the driver leaving the driver's seat; it could be a brief period of hands-off driving. Therefore, the HUD display's handling strategy is more complex than the grip state, specifically controlling the HUD's operating state based on the duration of the release state. Accordingly, when the HUD display is in normal projection mode, once the release state is detected, a timer begins counting the duration of the release state. A time threshold is set to determine the duration of the release state. In this example, a time threshold of 1 is set, which is determined based on typical vehicle usage and driving behavior. The accumulated time is then compared to the time threshold of 1. If the time threshold is less than 1, it indicates that the driver is still in the driver's seat. In this case, the HUD display does not switch to the normal projection mode, and the driver can still view the projected virtual image. When the accumulated timed duration exceeds time threshold 1, it indicates a high probability that the driver has left the driver's seat. In this case, the HUD display device can be placed in standby mode, meaning that the corresponding virtual image is not projected, adapting to the unattended scene. This standby mode can save the HUD display device's current power consumption and, more importantly, reduce heat generated by components when not in use, protecting the HUD display device. In a specific example, a time threshold 2 is also set to classify prolonged release states into long and extremely long durations. The extremely long duration more accurately identifies the driver as leaving the driver's seat, while the strategy corresponding to the long duration serves as a transitional process, quickly responding to the user's grip on the steering wheel and quickly entering the normal projection state. Accordingly, the duration of time threshold 2 is greater than that of time threshold 1. Therefore, when the HUD display device enters the standby state in response to the release state lasting longer than time threshold 1, a more refined internal switching between the standby states is implemented. In response to the release state lasting between time threshold 1 and time threshold 2, the HUD display device will be controlled to turn off the backlight source and / or image source of the HUD display device. The backlight source is the largest source of heat inside the device. Turning it off can significantly improve the temperature rise. If it is necessary to immediately enter the normal projection state, the backlight source and image source can be turned on very quickly. In response to the release state lasting for more than time threshold 2, not only the backlight source and / or image source in the HUD display device will be turned off, but also the communication interface (such as Figure 2The CAN / LIN interface 9021 in the HUD and / or the processor switches to low power consumption mode to further reduce the power consumption level of the HUD display device. In this state, if the holding state is detected, it will directly jump to the normal projection state, that is, turn on the backlight source and image source at the same time, and switch the communication interface and processor to the normal operation mode, so that the display light is projected normally onto the windshield. Optionally, in response to the duration of the release state exceeding the time threshold 2, specific optical lenses will be retracted to avoid the temperature rise caused by the backflow of sunlight. Taking into account that the time it takes for the optical lens to switch the angle back and forth is relatively long, when the duration of the release state is between the time threshold 1 and the time threshold 2, the original projection opening angle of the optical lens can be maintained, and the holding state can be quickly responded to switch to the normal projection state. In some examples, the original projection opening angle of the optical lens can also be maintained in any standby state or in the standby state between the time threshold 1 and the time threshold 2, but the angle of the optical lens will be adaptively adjusted according to the intensity of the external light entering, which will be described in detail below.

[0056] In some examples, such as Figure 5As shown, the HUD display device has a pre-start state in addition to the normal projection state and standby state after startup. The HUD display device does not necessarily enter the normal projection state upon vehicle ignition startup. Instead, the pre-start state serves as a transitional state before directly entering the normal projection state, improving user perception efficiency to a certain extent. Specifically, at the moment of vehicle ignition startup, the steering wheel state is also considered to determine the strategy branch to enter. If the driver has their hands on the steering wheel while the vehicle is being started, the strategy branch that controls the HUD display device to the normal projection state when the steering wheel is in a gripping state will be executed. If the driver has no hands on the steering wheel while the vehicle is being started, i.e., the released state is detected, the HUD display device will switch to the pre-start state. Unlike the normal projection state, the pre-start state does not project a virtual image, but is ready to enter the normal projection state. Optionally, the pre-start state switches the HUD display device's processor to normal operating mode to complete basic functions such as initialization and information transmission and reception. Furthermore, the communication interface may be enabled upon entering the pre-start state. More importantly, in the pre-start state, the optical lens is adjusted to the in-position mode, that is, the existing display light can be projected onto the windshield. In this way, when it is necessary to switch to the normal projection state, it is only necessary to quickly turn on the backlight source and / or the image source to form a visible virtual image in front of the windshield. The user perceives that the startup efficiency is very fast, which can be specifically consistent with the standby state content in the above example where the duration of the release state is between time threshold 1 and time threshold 2. Accordingly, a time threshold 3 is set, and the duration of time threshold 3 can be consistent with the duration of time threshold 1. When the vehicle enters the pre-start state with the ignition, further timing operations will be performed based on the duration of the release state. If the duration is less than time threshold 3, it is considered a short-term release state. At this time, the HUD display device will maintain the pre-start state currently in, waiting for possible projection instructions. If the holding state is detected before the time threshold 3, the HUD display device will immediately respond and enter the normal projection state, that is, the backlight source and image source can be turned on based on the pre-start state, and the display light can be projected according to the projection content, so that the user can trigger to immediately view the virtual image in front by simply touching the steering wheel. If the holding state has not been detected before the time threshold 3, that is, the vehicle steering wheel is in a loose state for more than the time threshold 3, it is considered to be a long-term loose state, and the HUD display device is switched from the pre-start state to the standby state. The standby state consumes less power than the pre-start state. For example, the communication interface and / or processor of the HUD display device can be put into low-power mode. Further, the optical lens can be adjusted to the retracted state or adjusted to the retracted state according to the intensity of the external light to reduce the impact of sunlight backflow on the temperature rise inside the device. For details, please refer to Figure 2In the example, the internal switch in the standby state depends on the release duration.

[0057] At the same time, after the vehicle is ignited and started, the HUD display device can also switch between the normal projection state and the standby state according to the grip state or release state of the steering wheel. Specifically, when the HUD display device is in the standby state, if the grip state is detected, the HUD display device will be immediately switched to the normal projection state. This switching situation can be coordinated with the driver in the main car to start driving the vehicle, thereby synchronously projecting virtual image information such as the vehicle speed. When the HUD display device is in the normal projection state, if the release state is detected, the duration of the release state will be timed. When it is less than the time threshold 3, it can be considered as a short-term release, and the HUD display will maintain the normal projection state it is in. For example, when the vehicle is driving, the driver's brief hands-off behavior will not trigger the disappearance of the projected virtual image. When the release state lasts for more than the time threshold 3, it will trigger the control of the HUD display device to enter the standby state. Optionally, when comparing and judging the duration of the released state when switching between the normal projection state and the standby state, a time threshold 4 is set separately to replace the time threshold 3. That is, the length of time the HUD display device remains in the pre-start state and the normal projection state is different. It is determined specifically according to the user's perception needs to improve the refinement of the overall experience.

[0058] In some examples, such as Figure 6As shown, when the driver leaves the driver's seat after driving, the ignition is inevitably turned off. However, to accommodate the driver's need for temporary virtual image viewing after the ignition is turned off, the HUD display device does not immediately shut down. Instead, different handling strategies are implemented based on the steering wheel's detected state. Compared to the handling strategy when the ignition is on, when the vehicle is turned off, the HUD display device does not directly respond to the grip state to enter the normal projection state. In a specific example, the HUD display device's operating state before the ignition is turned off is generally in the normal projection state or standby state. At this time, a time threshold of 5 is set to classify the grip state into a short grip state and a long grip state. A short grip state does not change the current operating state of the HUD display device. In other words, if the HUD display device is currently in the normal projection state, a short grip state will still cause it to remain in the normal projection state, and a long grip state will also cause it to remain in the normal projection state. If the HUD display device is currently in standby mode, a short-term holding state will only keep it in the current standby mode, and no switching will occur. Only in response to a long-term holding state will the HUD display device be triggered to switch from the standby mode to the normal projection mode. Similarly, a time threshold 6 will be set, and the time threshold 6 will be used to divide the release state into a short-term release state and a long-term release state. The short-term release state will not change the current working state of the HUD display device. In response to the long-term release state, the HUD display device will be controlled in the standby mode regardless of its current working state. It should be noted that the time threshold 6 can be set to be consistent with the time threshold 5. Optionally, different parameters can be set according to the user's experience requirements. Further, the setting of time threshold 6 can also refer to the setting of time threshold 1, time threshold 3 and / or time threshold 4.

[0059] In some examples, such as Figure 7 As shown, in order to further save the power consumption of the HUD display device, the HUD display device will not be in standby mode for a long time after the vehicle is turned off. Therefore, in this example, the HUD display device will be configured to switch between normal projection mode, standby mode and shutdown mode. Figure 6 For example, a short-term release state and a short-term hold state will not change the current working state of the HUD display device. Figure 6The long-term release state in the example is divided into a relatively long release state and an extremely long release state. That is, in addition to time threshold 6, a time threshold 7 greater than time threshold 6 is set. A release state lasting between time threshold 6 and time threshold 7 is considered a relatively long release state, and a release state lasting longer than time threshold 7 is considered an extremely long release state. The HUD display device can switch from a normal projection state to a standby state in response to the release state lasting for a relatively long time. In the standby state, if the release state is further reached for an extremely long time, the HUD display device will be triggered to automatically shut down. However, if the release state is not reached for an extremely long time, for example, if the device is still in a relatively long release state, or if a short period of holding occurs during the release state, causing the re-counting of the release state duration to not exceed time threshold 7, the HUD display device will remain in the standby state. After the HUD display device is turned off, the steering wheel will remain in the off state for short-term holding and releasing states (regardless of the duration) detected. Only when a long-term holding state is detected will the HUD display device be triggered to switch from the off state to the normal projection state. This can be used when the driver is sitting in the driver's seat of a stalled vehicle and wants to use the HUD display device to watch videos without igniting the vehicle. The driver can start the HUD display device by holding the steering wheel for a long time, making the user's operation convenient and quick.

[0060] In some examples, such as Figure 8As shown, the HUD display device is perceived by the user as shutting down synchronously with the vehicle being turned off by default. However, in order to cooperate with other functions, the HUD display device does not necessarily shut down in response to the vehicle being turned off. It may be in a standby state, at which time the user may not be aware that the HUD display device is still running in the background. Specifically, after the vehicle is turned off, the HUD display device will be in a first standby state or a second standby state according to the grip state or release state detected by the steering wheel. The first standby state and the second standby state here can correspond to different operating states within the standby state of the HUD display device before the ignition is turned off. In this example, the first standby state controls the communication interface and / or processor of the HUD display device to be in a normal operating mode, but the backlight source and / or image source are turned off, so that no display light is projected on the windshield. Optionally, the optical lens is still in the angle of the in-position mode, and once the backlight source and image source are turned on, a virtual image will be immediately generated, that is, it can be in response to the vehicle being ignited again and quickly enter the normal projection mode. Alternatively, the optical lens may be in a retracted angle in the first standby state, but may be placed in the in-position mode in response to the user's gripping state lasting longer than a specific time threshold. The second standby mode further reduces the power consumption of the HUD display device compared to the first standby mode because, based on the backlight source and / or image source being turned off, the communication interface and / or processor of the HUD display device is controlled to be in a low-power mode. This does not significantly drain the vehicle's power supply, ensuring that the vehicle's power supply can be normally provided to other low-power devices for continued operation. Accordingly, regardless of whether the HUD display device is in a normal projection state or standby state before the vehicle is turned off, or in a more refined first standby state or second standby state, the virtual image disappears immediately when the vehicle is turned off. While the vehicle is being turned off, if the steering wheel detects a gripping state, the HUD display device will switch from the normal projection state or the first standby state or the second standby state to the first standby state. If the steering wheel detects a released state, the HUD display device will switch from the normal projection state or the first standby state or the second standby state to the second standby state. During the entire period when the vehicle is turned off, if the HUD display device is currently in the first standby state, it will respond to the steering wheel being held and maintain the first standby state, and respond to the steering wheel being released to trigger the HUD display device to switch from the first standby state to the second standby state. Similarly, if the HUD display device is currently in the second standby state, it will respond to the steering wheel being released and maintain the second standby state, and respond to the steering wheel being held to trigger the HUD display device to switch from the second standby state to the first standby state.This adapts to user behavior after the vehicle is turned off. Since the user's hands are mostly off the steering wheel after the vehicle is turned off, the steering wheel will be detected as being released for a long time, causing the HUD display device to remain in the second standby state for a long time, saving power consumption after the vehicle is turned off. However, when the driver gets in the vehicle and prepares to start the vehicle, they will habitually place their hands on the steering wheel. This will detect the grip state, which will control the HUD display device to enter the first standby state. Since the first standby state has already made most of the startup preparations for the HUD display device to project the virtual image, once the user triggers the vehicle ignition, the HUD display device will quickly project the virtual image, improving the user experience. It should be noted that even if the user remains in the driver's seat after the vehicle is turned off, they will not frequently switch between holding and releasing the steering wheel unless intentionally. Therefore, the HUD display device will not frequently switch between the first and second standby states. Even if frequent switching occurs, the user will not see the virtual image and will not be confused by the frequent switching. Optionally, to reduce the potential loss of life from frequent switching between the HUD and the display, the optical lens angle in the second standby state can be adjusted to match that in the first standby state, thus reducing wear and tear on the motor. Furthermore, when high external light intensity is detected, the optical lenses in both the first and second standby states can be adjusted to a stowed position, eliminating the need for frequent angle adjustments associated with frequent switching between the two.

[0061] In some examples, such as Figure 9 As shown, after the vehicle is turned off, the HUD display device switches between the first standby state and the second standby state, and also sets a shutdown state. By judging the situation that the driver has left the vehicle, the HUD display device is shut down, saving corresponding power consumption and protecting the aging of the internal components of the device. In a specific example, in response to the vehicle being turned off and in the shutdown state, the first standby state or the second standby state can be entered according to the state detected by the steering wheel. For details, please refer to Figure 8 Example. With Figure 8The difference between the examples is that the release state is divided into a short-term release state and a long-term release state, and the holding state is divided into a short-term holding state and a long-term holding state. The specific division criteria can refer to the above examples. Optionally, the duration of the release state can be re-timed from the time the vehicle is turned off. Accordingly, the HUD display device will switch between the first standby state and the second standby state before entering the shutdown state, that is, in the above example, when the holding state is detected, the HUD display device will be controlled to be in the first standby state, and when the release state is detected, the HUD display device will be controlled to be in the second standby state. Further, after entering the second standby state, the HUD display device will be maintained in the second standby state in response to the short-term release state, and will be controlled to switch to the shutdown state in response to the long-term release state. When the HUD display device is in the shutdown state, it will not make any changes in the release state or the short-term holding state, and will maintain the shutdown state in which the HUD display device is currently. Only when a long-term holding state is detected will the switch be triggered, switching the HUD display device from the off state to the first standby state. After re-entering the first standby state, the previous switching mechanism between the first standby state and the second standby state will be restored. In some examples, the time threshold for judging the long-term holding state trigger condition for switching from the off state to the first standby state can also select different preset values according to actual conditions. For example, in the scenario where the driver opens the door and prepares to start the vehicle, if the time threshold for the long-term holding state is set too high, it will affect the timing of the HUD display device entering the first standby state. It is very likely that the vehicle has started but has not yet entered the first standby state. Therefore, a smaller time threshold is called in combination with some driver's door opening signals to determine the long-term holding state, thereby ensuring that the HUD display device enters the first standby state as early as possible. In this example, even if the HUD display device enters the first standby state quickly and the vehicle is not immediately ignited, it can switch back and forth between the first standby state and the second standby state based on the signal detected by the steering wheel to maintain lower power consumption. Optionally, no matter the HUD display device is in the first standby state, the second standby state or the shutdown state, in response to the vehicle being ignited and in the starting state, it will trigger to enter the normal projection state, and the state switching after the vehicle is started can refer to Figure 4 、 Figure 5 Example.

[0062] In some examples, such as Figure 10As shown, at least one light sensor 9091 is also set up near the image source 909 inside the HUD display device. The light sensor 9091 is used to measure the intensity of external light guided into the HUD display device by the optical lens. If the light intensity is too high, it means that the sunlight backflow is relatively serious, which can easily cause the temperature on the surface of the image source to be too high and burn. Therefore, in this example, when the light intensity exceeds the maximum limit that the image source can withstand, the optical lens can be directly adjusted to a retracted angle so that external light cannot directly enter the interior and continue to cause focusing damage to the image source. When the detected light intensity approaches the critical value, the angle of the optical lens will be adaptively adjusted according to the current working state of the HUD display device. For example, in the above example, when the HUD display device is switched to standby mode, since the HUD display device does not temporarily need to project the display light emitted by the image source onto the windshield, the optical lens can be temporarily retracted so that external light cannot directly enter the interior and continue to cause internal temperature rise. When the HUD display device needs to switch to the normal projection state, the optical lens is reopened to guide the display light to the designated position of the windshield normally. At this time, cooling can be achieved by fans, etc. Optionally, in order to improve the accuracy of light intensity detection, you can refer to Figure 8 Light sensors 9091 are respectively set at the upper, lower, left and right edge positions of the image source 909, and the intensity of the external light guided into the HUD display device is determined by integrating multiple light sensors 9091.

[0063] In some examples, the HUD display device is accompanied by a prompt when it switches its working state normally in response to the vehicle's startup state, shutdown state, and the grip state and release state detected by the vehicle's steering wheel. Figure 4 For example, when the HUD display device switches normally between the normal projection state and the standby state, a certain prompt will be output each time the switch occurs. This prompt is not obvious, but it helps users eliminate doubts about the abnormality of the HUD display device, such as a specific beep sound when switching, or a specific prompt message popping up on the cockpit center control screen. If the HUD display device suddenly stops projecting but is not accompanied by a corresponding prompt method, the user can easily determine that the HUD display device has an abnormality and take maintenance measures in time. In some examples, an indicator light can also be set near the light outlet of the HUD display device. The indicator light can output indicator light forms of different colors and / or flashing frequencies when the HUD display device is in different working states. The user can determine at a glance the current working state of the HUD display device, especially the different standby states, by the color and / or flashing frequency. In addition to using the HUD display device's own indicator light, the anti-theft indicator light on the main car door can also be reused to Figure 9For example, different colors or flashing frequencies can be used to represent different working states. If the anti-theft indicator light is in an abnormal state, such as the HUD display device is still in the first standby state when the user leaves the vehicle, it indicates that the HUD display device may be stuck or other abnormalities, and the user can be notified to take timely action.

[0064] In some examples, such as Figure 11 As shown, the display device that implements the above-mentioned start-stop management method may specifically include a processor 931, a memory 932, an input device 933 and an output device 934, wherein the input device 933 may include an operation button integrated on the display device, etc., and the display device may receive input control instructions and data through the input device 933. The output device 934 may include an image source integrated on the display device, etc., and the display device may output corresponding instructions or data to the output device 934. Furthermore, the memory 932 stores a computer program running on the processor 931, and the processor 931 implements the above-mentioned example start-stop management method when executing the computer program. In some examples, a computer-readable storage medium stores a computer program, and the computer program implements the above-mentioned example start-stop management method when executed by the processor.

[0065] like Figure 12 As shown, a vehicle can be equipped with the aforementioned HUD display device. Specifically, the HUD display device is integrated within the center console 10, for example, in front of the steering wheel. The HUD display device projects corresponding display light onto the vehicle's windshield 4 through its projection window 102. Viewers observing the area in front of the windshield 4 from the cockpit directly see a virtual image within the projection area 50. This virtual image includes not only basic information such as vehicle speed but also navigation information aligned with the actual road surface. The projection's operating state automatically switches based on user behavior within the vehicle, optimizing the overall cockpit system's management efficiency and improving the user experience. In particular, the user's perceived startup speed is significantly accelerated. In some examples, the vehicle can also distribute a program implementing the aforementioned start-stop management method via the aforementioned computer-readable storage medium, enabling convenient updates and upgrades to the vehicle's onboard HUD display device. It should be noted that the aforementioned vehicles are not limited to cars as a means of transportation, but may also include buses, trucks, excavators, motorcycles, trains, high-speed trains, ships, yachts, airplanes, spacecraft, and the like. The projected windshield is not limited to the front windshield of the car, but can also be a transparent surface in other locations.

[0066] In conjunction with the above examples, the technical solutions involved in this application can be directly embodied as hardware, a software module executed by a control unit, or a combination of the two, that is, one or more steps and / or one or more step combinations, which can correspond to various software modules of a computer program flow, or to various hardware modules, such as ASICs (Application Specific Integrated Circuits), FPGAs (Field-Programmable Gate Arrays), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or any appropriate combination thereof. For the convenience of description, the above description is divided into various modules and described separately according to their functions. Of course, when implementing this application, the functions of each module can be implemented in the same or multiple software and / or hardware.

[0067] Through the description of the above examples, those skilled in the art can clearly understand that the present application can be implemented by means of software plus the necessary general-purpose hardware platform. Based on this understanding, the technical solution involved in this application, or the part that contributes to the existing technology, can be embodied in the form of a software product. The software is executed by a microcontroller unit and, depending on the required configuration, can include one or more microcontroller units of any type, including but not limited to a microcontroller unit, a microcontroller, a DSP (Digital Signal Processor), or any combination thereof. The software is stored in a memory, such as a volatile memory (such as a random access memory), a non-volatile memory (such as a read-only memory, a flash memory, etc.), or any combination thereof.

[0068] In summary, this application obtains the KL15 signal of the vehicle where the HUD display device is located and the sensor signal of the vehicle steering wheel, and adaptively controls the start and stop of the HUD display device based on the user's triggering of the vehicle engine ignition and shutdown and the grip and release of the vehicle steering wheel, thereby achieving unmanned device working status management. This application can intelligently and automatically manage the start and stop of the HUD display device. The device startup can be adaptively performed in the background based on the user's behavior, and the user's actual perception experience will also be better.

[0069] It should be understood that although this specification includes some examples, none of these examples constitutes a single independent technical solution. This description is provided for clarity purposes only. Those skilled in the art should consider this specification as a whole. The technical solutions in the various examples may be appropriately combined to form other implementations that are understandable to those skilled in the art.

[0070] The series of detailed descriptions listed above are merely specific descriptions of feasible implementation methods of the present application. They are not intended to limit the scope of protection of the present application. Any equivalent implementation methods or modifications that do not deviate from the teachings of the present application should be included in the scope of protection of the present application.

Claims

1. A start-stop management method, characterized in that: include: The HUD display device is configured to include at least a first standby state, a second standby state, and a normal projection state, wherein the first standby state controls the communication interface and / or processor of the HUD display device to be in a normal operation mode, the second standby state includes controlling the communication interface and / or processor of the HUD display device to be in a low power consumption mode, and the normal projection state includes turning on a backlight source and an image source based on the first standby state to project display light onto a vehicle windshield to form a virtual image in front of the vehicle; In response to the vehicle being turned off and in the off state, when the steering wheel of the vehicle is in the gripping state, the HUD display device is controlled to be in the first standby state; when the steering wheel of the vehicle is in the released state, the HUD display device is controlled to be in the second standby state.

2. The start-stop management method according to claim 1, characterized in that: When the steering wheel of the vehicle is in the released state, the HUD display device is controlled to be in a state other than the second standby state, and the start-stop management method includes: In response to the release state lasting for a time period exceeding a first time threshold, the HUD display device is controlled to be directly shut down.

3. The start-stop management method according to claim 2, characterized in that: After controlling the HUD display device to directly shut down, the start-stop management method includes: When the steering wheel of the vehicle is in the gripping state, in response to a duration of the gripping state being less than a second time threshold, keeping the HUD display device in the off state; and in response to a duration of the gripping state exceeding the second time threshold, controlling the HUD display device to be in the first standby state; When the steering wheel of the vehicle is in the released state, the HUD display device is kept in a powered-off state.

4. The start-stop management method according to claim 1, characterized in that: When the steering wheel of the vehicle is in the gripping state, controlling the HUD display device to be in the first standby state includes: In response to the holding state lasting longer than a third time threshold, based on the first standby state, the optical lens angle of the HUD display device is adjusted so that the formed light path meets the needs of the normal projection state.

5. The start-stop management method according to claim 1, characterized in that: The start-stop management method includes: When the vehicle is ignited, the HUD display device is configured to directly enter the normal projection state.

6. The start-stop management method according to claim 1, characterized in that: When the vehicle is ignited, the HUD display device is configured to directly enter the normal projection state, including: In response to the HUD display device being in the first standby state, switching from the first standby state to the normal projection state; In response to the HUD display device being in the second standby state, switching from the second standby state to the normal projection state.

7. The start-stop management method according to claim 1, characterized in that: The first standby state and / or the second standby state is displayed by the color or flashing frequency of the anti-theft indicator light on the vehicle door or the status indicator light of the HUD display device.

8. A display device, characterized in that: The method comprises a memory, a processor and a computer program stored in the memory and running on the processor, wherein when the processor executes the computer program, the steps of the start-stop management method according to any one of claims 1 to 7 are implemented.

9. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the start-stop management method according to any one of claims 1 to 7 are implemented.

10. A means of transport, characterized in that: Includes the display device according to claim 8 or the computer-readable storage medium according to claim 9.

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