Transparent OLED head-up display system and control method thereof

Abstract

The invention belongs to the technical field of head-up displays. The invention provides a transparent OLED head-up display system and a control method thereof. According to the embodiment of the invention, the head position and the visual angle of the driver are monitored in real time through the camera, and an equiangular imaging effect which is the same as that of a traditional HUD is realized in combination with a parallax compensation algorithm and a symbol picture dynamic adjustment technology, so that the imaging distance of the image is approximate to infinity. And on the other hand, the system has the function of dynamically adjusting the display content, and the transparency, color and prominence of the display content can be optimized in real time according to the physiological characteristics (such as blood pressure, heart rate, eye movement, respiratory rate and the like) of the driver, so that the perception of the driver on key information is enhanced in a personalized manner, and the driving safety is improved.

Description

Technical Field

[0001] The disclosed embodiments relate to the technical field of head-up displays, and in particular to a transparent OLED head-up display system and a control method thereof. Background Art

[0002] The traditional HUD (Head Up Display) system projects information into the driver's field of view through the principle of optical reflection, forming an equiangular display effect, making the displayed content appear to be at infinity. However, the traditional HUD is large in size, heavy in weight, and relies on specific optical components, making it unsuitable for new vehicles with high integration requirements. With the development of transparent OLED technology and machine vision technology, HUD systems based on transparent displays have provided new possibilities, but due to the fixed position of transparent displays, it is difficult to achieve the same infinite imaging effect as traditional HUDs. Therefore, how to achieve the same imaging effect as traditional HUDs in transparent OLED displays has become a key technical challenge. At present, there is no solution for a HUD system that combines machine vision and transparent OLED technology.

[0003] Therefore, it is necessary to improve one or more problems existing in the above-mentioned related technical solutions.

[0004] It should be noted that this section is intended to provide background or context for the technical solutions of the present disclosure stated in the claims. The description herein is not admitted to be prior art by virtue of being included in this section. Summary of the invention

[0005] The purpose of the embodiments of the present disclosure is to provide a transparent OLED head-up display system and a control method thereof, thereby overcoming one or more problems caused by the limitations and defects of the related art at least to a certain extent.

[0006] According to a first aspect of an embodiment of the present disclosure, a transparent OLED head-up display system is provided, the system comprising: An eye tracking module, a physiological feature detection module, a display content adjustment module and a transparent OLED display screen; wherein the display content adjustment module is electrically connected to the eye tracking module, the physiological feature detection module and the transparent OLED display screen respectively; The eye tracking module is used to obtain the driver's head position data and viewing angle data; The physiological characteristic detection module is used to obtain the physiological characteristic data of the driver; The display content adjustment module includes a parallax compensation unit and a display optimization unit, the parallax compensation unit is electrically connected to the eye tracking module and the display optimization unit respectively, and the display optimization unit is electrically connected to the physiological feature detection module; wherein, The parallax compensation unit is used to output a parallax compensation parameter according to the head position data and the viewing angle data; The display optimization unit is used to output display parameters according to the physiological characteristic data and the environmental information, and generate display image data according to the display parameters and the parallax compensation parameters; The transparent OLED display screen is electrically connected to the display optimization unit and is used to directly display information in the driver's field of vision.

[0007] Furthermore, the eye tracking module at least includes: Visible light camera, infrared camera and millimeter wave radar.

[0008] According to a second aspect of an embodiment of the present disclosure, a control method for a transparent OLED head-up display system is provided, the method comprising: Using an eye tracking module to monitor the driver's head position data and viewing angle data in real time, and transmitting the head position data and the viewing angle data to a display content adjustment module; Acquire the driver's physiological characteristic data in real time using a physiological characteristic detection module, and transmit the physiological characteristic data to the display content adjustment module; The parallax compensation unit in the display content adjustment module calculates the parallax compensation parameters caused by the head movement according to the head position data and the viewing angle data; the display optimization unit in the display content adjustment module outputs the display parameters based on the physiological characteristic data and the environmental information using the driver's physiological and psychological state evaluation algorithm; generates the display image data according to the parallax compensation parameters and the display parameters, and transmits the display image data to the transparent OLED display screen; The transparent OLED display screen analyzes the display image data and displays information.

[0009] Further, the step of calculating the parallax compensation parameter caused by the head movement according to the head position data and the viewing angle data includes: The offset of the head in the X, Y and Z axes is obtained according to the head position data, and the distance d from the current position of the driver's eyes to the transparent OLED display screen is calculated according to the offset of the head in the X, Y and Z axes and the viewing angle data:

[0010] Where d0 is the initial reference distance, Δx, Δy and Δz are the offsets of the head in the X, Y and Z axes respectively; Calculate the horizontal offset angle of the HUD character in the driver's field of view based on the distance d from the current position of the driver's eyes to the transparent OLED display screen and vertical offset angle β: The horizontal offset angle for:

[0011] The vertical offset angle β for:

[0012] According to the horizontal offset angle and the vertical offset angle β , calculate the horizontal position of the HUD characters after parallax compensation and the vertical position of the HUD characters after parallax compensation:

[0013] in, Horizontal position of the HUD characters before parallax compensation, Vertical position of the HUD characters before parallax compensation, is the horizontal position of the HUD characters after parallax compensation, is the vertical position of the HUD characters after parallax compensation, and L is the distance from the driver’s eyes to the OLED display before the driver moves; The parallax compensation parameter is obtained according to the horizontal position of the HUD character after parallax compensation and the vertical position of the HUD character after parallax compensation.

[0014] Furthermore, the physiological characteristic data includes at least blood pressure, heart rate, eye movement status and respiratory rate; and the display parameters include at least brightness, contrast and complexity.

[0015] Furthermore, based on the physiological characteristic data and environmental information, the step of outputting display parameters using a driver's physiological and psychological state assessment algorithm includes: According to the basic brightness , blood pressure regulation function , heart rate regulation function , eye movement accommodation function , respiratory rate regulation function Adjusting to obtain display brightness, display contrast and display complexity; The display parameter is obtained according to the display brightness, the display contrast and the display complexity.

[0016] Furthermore, the expression of the display brightness is:

[0017] The expression of the display contrast is:

[0018] in, To display the contrast, is the basic contrast; The display complexity includes a simple mode and a full-screen mode. When the display brightness is greater than or equal to a first preset value and the display contrast is greater than or equal to a second preset value, the simple mode is adopted; otherwise, the full-screen mode is adopted.

[0019] The technical solution provided by the embodiments of the present disclosure may have the following beneficial effects: In the embodiment of the present disclosure, through the above-mentioned transparent OLED head-up display system and control method thereof, on the one hand, the driver's head position and viewing angle are monitored in real time through the camera, and the parallax compensation algorithm and symbol screen dynamic adjustment technology are combined to achieve the same equiangular imaging effect as the traditional HUD, so that the image imaging distance is close to infinity. On the other hand, the system has the function of dynamically adjusting the display content, and can optimize the transparency, color and prominence of the display content in real time according to the driver's physiological characteristics (such as blood pressure, heart rate, eye movement, breathing rate, etc.), thereby enhancing the driver's perception of key information in a personalized way and improving driving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present disclosure, and together with the specification are used to explain the principles of the present disclosure. Obviously, the accompanying drawings described below are only some embodiments of the present disclosure, and for ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work.

[0021] Figure 1 A schematic structural diagram of a transparent OLED head-up display system in an exemplary embodiment of the present disclosure is shown; Figure 2 A schematic diagram showing a working scenario of a transparent OLED head-up display system in an exemplary embodiment of the present disclosure is shown; Figure 3 A step diagram showing a method for controlling a transparent OLED head-up display system in an exemplary embodiment of the present disclosure. DETAILED DESCRIPTION

[0022] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that the disclosure will be more comprehensive and complete and to fully convey the concepts of the example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0023] In addition, the accompanying drawings are only schematic illustrations of the embodiments of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the figures represent the same or similar parts, and their repeated descriptions will be omitted. Some of the block diagrams shown in the accompanying drawings are functional entities and do not necessarily correspond to physically or logically independent entities.

[0024] In this exemplary embodiment, a transparent OLED head-up display system is first provided. Figure 1 As shown in , the transparent OLED head-up display system may include: an eye tracking module, a physiological feature detection module, a display content adjustment module and a transparent OLED display screen; wherein the display content adjustment module is electrically connected to the eye tracking module, the physiological feature detection module and the transparent OLED display screen respectively; The eye tracking module is used to obtain the driver's head position data and viewing angle data; The physiological characteristic detection module is used to obtain the physiological characteristic data of the driver; The display content adjustment module includes a parallax compensation unit and a display optimization unit, wherein the parallax compensation unit is electrically connected to the eye tracking module and the display optimization unit respectively, and the display optimization unit is electrically connected to the physiological feature detection module; wherein the parallax compensation unit is used to output a parallax compensation parameter according to the head position data and the viewing angle data; and the display optimization unit is used to output a display parameter according to the physiological feature data and the environmental information, and generate display image data according to the display parameter and the parallax compensation parameter; The transparent OLED display screen is electrically connected to the display optimization unit and is used to directly display information in the driver's field of vision.

[0025] Through the above transparent OLED head-up display system, on the one hand, the camera monitors the driver's head position and viewing angle in real time, and combines the parallax compensation algorithm and the symbol screen dynamic adjustment technology to achieve the same equiangular imaging effect as the traditional HUD, making the image imaging distance close to infinity. On the other hand, the system has the function of dynamically adjusting the display content, and can optimize the transparency, color and prominence of the display content in real time according to the driver's physiological characteristics (such as blood pressure, heart rate, eye movement, breathing rate, etc.), thereby enhancing the driver's perception of key information in a personalized way and improving driving safety.

[0026] Next, we will refer to Figure 1 to Figure 2 The various parts of the above-mentioned transparent OLED head-up display system in this example embodiment are described in more detail.

[0027] In one embodiment, Figure 2As shown, the transparent OLED display is used to display information directly in the driver's field of view, and can automatically adjust the display brightness, contrast and transparency according to ambient lighting conditions to adapt to the field of view requirements in different driving environments.

[0028] The eye tracking component (i.e., eye tracking module) includes at least two cameras and other sensors (such as infrared cameras and millimeter-wave radars) to monitor the driver's head position and eye position in real time, obtain the driver's head position and eye position through image recognition, image classification, and target tracking algorithms, and send the head position and viewing angle information to the display content adjustment component to ensure that the information display is consistent with the driver's line of sight. Among them, the camera's resolution, focal length, and installation angle are optimized according to the interior layout of the vehicle or aircraft and the driver's position. The eye tracking component may include visible light cameras, infrared cameras, and millimeter-wave radars to ensure that the driver's head position and viewing angle are accurately captured in various environments and to improve the overall reliability of the system.

[0029] The display content adjustment component (i.e., display content adjustment module) dynamically adjusts the display content on the transparent OLED display, including position, angle, size, brightness, transparency, and color, according to the driver's head position, viewing angle, ambient lighting conditions, and the driver's physiological and emotional characteristics. The component also calculates parallax for compensation to ensure the accuracy and consistency of the display content at different viewing angles of the driver, thereby achieving the same equiangular imaging effect as traditional HUD.

[0030] In one embodiment, Figure 2 As shown, the parallax compensation unit uses the driver's head position data and viewing angle information to calculate and output parallax compensation parameters, which support the display content adjustment component to dynamically adjust the position of the display content to ensure that the HUD characters observed by the driver at different viewing positions always maintain the same angle with the outside world. The parallax compensation parameters output by the parallax compensation algorithm can support the display content adjustment component to use the display position adjustment parameters to complete the adjustment of the display character position to achieve an isometric effect.

[0031] The display optimization unit receives feedback data from the ambient light sensor, as well as the driver's physiological and emotional characteristics (including blood pressure, heart rate, eye movement status, and breathing rate), and automatically adjusts the display parameters of the transparent OLED display (including brightness, contrast, display complexity, etc.) according to the display mode switching instructions output by the driver's physiological and psychological state evaluation algorithm to ensure that information is clearly visible under various lighting conditions.

[0032] In one embodiment, the camera layout in the eye tracking component is optimized to ensure that the head position is accurately captured in a variety of driver sitting postures and viewing angles, thereby supporting the system's precise display adjustment capabilities.

[0033] In one embodiment, the overall transparency of the transparent OLED display or the transparency and color of a single symbol can be dynamically adjusted according to the driving environment and the driver's physiological characteristics (such as blood pressure, heart rate, eye movement, breathing rate, etc.) to enhance or weaken the visual effect of specific display content and ensure that the driver can obtain key driving information under the most suitable visual conditions.

[0034] In one embodiment, the system also has a safety mechanism that can automatically turn off the display screen and issue a visual or audible warning signal in the event of system failure, display screen damage or other abnormal conditions to ensure that the driver's field of vision is not affected, while providing a redundant display path to ensure the continuous availability of information.

[0035] Furthermore, this exemplary embodiment also provides a control method for a transparent OLED head-up display system. Figure 3 As shown in , the control method of the transparent OLED head-up display system may include: step S101 to step S104.

[0036] Step S101: using an eye tracking module to monitor the driver's head position data and viewing angle data in real time, and transmitting the head position data and viewing angle data to a display content adjustment module; Step S102: using the physiological characteristic detection module to obtain the physiological characteristic data of the driver in real time, and transmitting the physiological characteristic data to the display content adjustment module; Step S103: the parallax compensation unit in the display content adjustment module calculates the parallax compensation parameters caused by the head movement according to the head position data and the viewing angle data; the display optimization unit in the display content adjustment module outputs the display parameters based on the physiological characteristic data and the environmental information and the driver's physiological and psychological state evaluation algorithm; the display image data is generated according to the parallax compensation parameters and the display parameters, and transmitted to the transparent OLED display screen; Step S104: the transparent OLED display screen analyzes the display image data and displays information.

[0037] In step S101, the eye tracking component is started to monitor the driver's head position and viewing angle in real time, and transmit the relevant data to the display content adjustment component.

[0038] In step S102, the physiological characteristic detection module is started to obtain the physiological characteristic data of the driver in real time, and the physiological characteristic data is transmitted to the display content adjustment module.

[0039] In step S103 and step S104, the display content adjustment component dynamically adjusts the position, angle, and size of the display content on the transparent OLED display screen according to the eye tracking data, and starts the imaging distance simulation function to ensure the infinite imaging effect of the display content.

[0040] The parallax compensation unit calculates and compensates for the parallax caused by head movement, and adjusts the position and angle of the displayed content in real time to ensure the accuracy and consistency of the displayed content at different viewing angles.

[0041] The display optimization unit automatically adjusts the brightness, contrast and transparency of the transparent OLED display based on physiological characteristic data and ambient lighting conditions to ensure the clarity of the displayed content under various lighting conditions.

[0042] In step S105, the display content is dynamically optimized according to the changes in the driver's viewing angle and the environment, providing a head-up display effect consistent with the traditional HUD, and adjusting the transparency and color of the display content in real time as needed during driving.

[0043] The operating status is monitored in real time. When a fault or display screen abnormality is detected, the safety mechanism is activated to automatically turn off the display screen and send out a warning signal to ensure the safety of the driver's field of vision.

[0044] In one embodiment, the steps of calculating the parallax compensation parameters are: The offset of the head in the X, Y and Z axes is obtained according to the head position data. The distance d from the current position of the driver's eyes to the transparent OLED display is calculated according to the offset of the head in the X, Y and Z axes and the viewing angle data:

[0045] Where d0 is the initial reference distance, Δx, Δy and Δz are the offsets of the head in the X, Y and Z axes respectively; Calculate the horizontal offset angle of the HUD characters in the driver's field of view based on the distance d from the driver's current eye position to the transparent OLED display and vertical offset angle β : Horizontal offset angle for:

[0046] Vertical offset angle β for:

[0047] According to the horizontal offset angle and vertical offset angle β , calculate the horizontal position of the HUD characters after parallax compensation and the vertical position of the HUD characters after parallax compensation:

[0048] in, Horizontal position of the HUD characters before parallax compensation, Vertical position of the HUD characters before parallax compensation, is the horizontal position of the HUD characters after parallax compensation, is the vertical position of the HUD characters after parallax compensation, and L is the distance from the driver’s eyes to the OLED display before the driver moves; The parallax compensation parameter is obtained according to the horizontal position of the HUD character after the parallax compensation and the vertical position of the HUD character after the parallax compensation.

[0049] In one embodiment, the driver's physiological and psychological state assessment algorithm includes: The calculation steps of the brightness adjustment algorithm are as follows: Display brightness According to the basic brightness , blood pressure regulation function , heart rate regulation function , eye movement accommodation function , respiratory rate regulation function Adjustments are made, and each adjustment function has a corresponding adjustment weight. The comprehensive function is as follows:

[0050] in: Blood pressure regulation function As shown below, assuming that the pilot's blood pressure is in accordance with the standard blood pressure of 120 / 80, when the low pressure BPdia is higher than 90 or the high pressure BPsys is greater than 140, the following adjustment formula is met, where ΔL is temporarily set to 0.2 times Lbase:

[0051] Heart rate regulation function As shown below, assuming the normal heart rate range of a pilot is 60-100 bpm, the brightness is increased when the heart rate is too high, and reduced when it is too low, in accordance with the following adjustment formula:

[0052] Eye movement state adjustment function The judgment is based on the pilot's eye stability. In order to evaluate "eye stability" and "eye instability", the following key parameters are considered: Fixation Change Rate (FCR): The fixation change rate refers to the number of times the eyes change their fixation point on the screen or scene per unit time. Frequent changes in fixation usually indicate distraction or instability.

[0053] Stable: The gaze point changes less frequently, no more than 2 times per second.

[0054] Unstable: The gaze point changes frequently, more than 5 times per second.

[0055] Fixation Duration (FD): Fixation duration is the amount of time the eyes remain on the same point. When stable, fixations usually last longer.

[0056] Stable: Each fixation lasts longer than 500 milliseconds.

[0057] Unstable: Each fixation lasts less than 300 milliseconds.

[0058] Eye movement frequency (SaccadicFrequency, SF): Eye movement frequency refers to the number of rapid eye movements per unit time, which usually occurs frequently when attention is not focused.

[0059] Stable: Eye movement frequency is less than 3 times per second.

[0060] Unstable: Eye movement frequency is greater than 6 times per second.

[0061] The formula for determining eye movement stability is as follows:

[0062] Among them, w1, w2, and w3 are weight coefficients, which are set to 0.2, 0.4, and 0.4 respectively.

[0063] Eye movement state adjustment function As shown below:

[0064] Respiratory rate regulation function As shown below, assuming the pilot's normal breathing rate: 12-20 times / minute. High-frequency breathing: RR>25 times / minute. When the breathing rate is high, increase the brightness. In accordance with the following adjustment formula:

[0065] The contrast adjustment algorithm uses an adjustment model and adjustment method similar to the brightness adjustment algorithm, as shown below, where To display the contrast, The base contrast.

[0066]

[0067] There are two adjustment effects for display complexity adjustment, namely simple mode and full-screen mode. When the brightness is adjusted to high brightness mode and the contrast is adjusted to high contrast mode, the simple mode is used, otherwise the full-screen mode is used.

[0068] Through the above transparent OLED head-up display system, on the one hand, the camera monitors the driver's head position and viewing angle in real time, and combines the parallax compensation algorithm and the symbol screen dynamic adjustment technology to achieve the same equiangular imaging effect as the traditional HUD, making the image imaging distance close to infinity. On the other hand, the system has the function of dynamically adjusting the display content, and can optimize the transparency, color and prominence of the display content in real time according to the driver's physiological characteristics (such as blood pressure, heart rate, eye movement, breathing rate, etc.), thereby enhancing the driver's perception of key information in a personalized way and improving driving safety.

[0069] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. in the above description indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present disclosure and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present disclosure.

[0070] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present disclosure, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0071] In the embodiments of the present disclosure, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0072] In the embodiments of the present disclosure, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0073] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification.

[0074] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any modification, use or adaptation of the present disclosure, which follows the general principles of the present disclosure and includes common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present disclosure are indicated by the appended claims.

Claims

1. A transparent OLED head-up display system, characterized in that: The system includes: An eye tracking module, a physiological feature detection module, a display content adjustment module and a transparent OLED display screen; wherein the display content adjustment module is electrically connected to the eye tracking module, the physiological feature detection module and the transparent OLED display screen respectively; The eye tracking module is used to obtain the driver's head position data and viewing angle data; The physiological characteristic detection module is used to obtain the physiological characteristic data of the driver; The display content adjustment module includes a parallax compensation unit and a display optimization unit, the parallax compensation unit is electrically connected to the eye tracking module and the display optimization unit respectively, and the display optimization unit is electrically connected to the physiological feature detection module; wherein, The parallax compensation unit is used to output a parallax compensation parameter according to the head position data and the viewing angle data; The display optimization unit is used to output display parameters according to the physiological characteristic data and the environmental information, and generate display image data according to the display parameters and the parallax compensation parameters; The transparent OLED display screen is electrically connected to the display optimization unit and is used to directly display information in the driver's field of view.

2. The transparent OLED head-up display system according to claim 1, characterized in that: The eye tracking module at least includes: Visible light camera, infrared camera and millimeter wave radar.

3. A control method for a transparent OLED head-up display system, characterized in that: The method includes: Using an eye tracking module to monitor the driver's head position data and viewing angle data in real time, and transmitting the head position data and the viewing angle data to a display content adjustment module; Acquire the driver's physiological characteristic data in real time using a physiological characteristic detection module, and transmit the physiological characteristic data to the display content adjustment module; The parallax compensation unit in the display content adjustment module calculates the parallax compensation parameters caused by the head movement according to the head position data and the viewing angle data; the display optimization unit in the display content adjustment module outputs the display parameters based on the physiological characteristic data and the environmental information using the driver's physiological and psychological state evaluation algorithm; generates the display image data according to the parallax compensation parameters and the display parameters, and transmits the display image data to the transparent OLED display screen; The transparent OLED display screen analyzes the display image data and displays information.

4. The control method of the transparent OLED head-up display system according to claim 3, characterized in that: The step of calculating the parallax compensation parameter caused by the head movement according to the head position data and the viewing angle data comprises: The offset of the head in the X, Y and Z axes is obtained according to the head position data, and the distance d from the current position of the driver's eyes to the transparent OLED display screen is calculated according to the offset of the head in the X, Y and Z axes and the viewing angle data: Where d0 is the initial reference distance, Δx, Δy and Δz are the offsets of the head in the X, Y and Z axes respectively; Calculate the horizontal offset angle of the HUD character in the driver's field of view based on the distance d from the current position of the driver's eyes to the transparent OLED display screen and vertical offset angle β : The horizontal offset angle for: The vertical offset angle β for: According to the horizontal offset angle and the vertical offset angle β , calculate the horizontal position of the HUD characters after parallax compensation and the vertical position of the HUD characters after parallax compensation: in, Horizontal position of the HUD characters before parallax compensation, Vertical position of the HUD characters before parallax compensation, is the horizontal position of the HUD characters after parallax compensation, is the vertical position of the HUD characters after parallax compensation, and L is the distance from the driver’s eyes to the OLED display before the driver moves; The parallax compensation parameter is obtained according to the horizontal position of the HUD character after parallax compensation and the vertical position of the HUD character after parallax compensation.

5. The control method of the transparent OLED head-up display system according to claim 3, characterized in that: The physiological characteristic data at least include blood pressure, heart rate, eye movement status and respiratory rate; the display parameters at least include brightness, contrast and complexity.

6. The control method of the transparent OLED head-up display system according to claim 5, characterized in that: The step of outputting display parameters using a driver's physiological and psychological state assessment algorithm based on the physiological characteristic data and environmental information includes: According to the basic brightness , blood pressure regulation function , heart rate regulation function , eye movement accommodation function , respiratory rate regulation function Adjusting to obtain display brightness, display contrast and display complexity; The display parameter is obtained according to the display brightness, the display contrast and the display complexity.

7. The control method of the transparent OLED head-up display system according to claim 6, characterized in that: The display brightness The expression is: The expression of the display contrast is: in, To display the contrast, is the basic contrast; The display complexity includes a simple mode and a full-screen mode. When the display brightness is greater than or equal to a first preset value and the display contrast is greater than or equal to a second preset value, the simple mode is adopted; otherwise, the full-screen mode is adopted.

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