Eye position adjusting method and adjusting device for head-up display

Abstract

The invention provides an eye position adjusting method and device for a head-up display, and the method comprises the following steps: 1, preliminarily adjusting the height of the head-up display through a height adjusting mechanism according to the eye position height of a pilot; secondly, a target correcting mechanism is installed on a height adjusting mechanism, and a target plate is arranged at the set position of a machine head; and step 3, fine adjustment of the height of the eye position is completed by adjusting the positions of the front sight and the target plate target in the head-up display. Compared with the prior art, at least one technical scheme adopted by the invention at least has the beneficial effects that coarse adjustment and fine adjustment of the eye position height of the head-up display are realized through cooperative cooperation of the height adjusting mechanism and the boresight mechanism, the problem of incomplete visual field caused by height difference of pilots is effectively solved, and the visual effect of the head-up display is improved. The universality and adaptability of the head-up display are remarkably improved, the man-machine work efficiency is enhanced, and the flight safety is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of aviation technology, and specifically to a method and device for adjusting the eye position of a head-up display. Background Technology

[0002] Currently, head-up displays (HUDs) installed on aircraft both domestically and internationally lack eye-position adjustment functionality. Pilots can only adjust their seating posture to match their eye position. However, pilots vary significantly in height. According to the Chinese military standard GJB 4856-2003, the eye-point height of a P5 pilot is 785 mm, while that of a P95 pilot is 861 mm, a difference of 76 mm. As a result, current HUDs on transport aircraft both domestically and internationally cannot accommodate the needs of pilots of all heights, and different pilots may encounter the problem of not being able to see the entire HUD screen. Summary of the Invention

[0003] In view of this, the present invention provides a method and device for adjusting the eye position of a head-up display (HUD). This solves the problem that different pilots may encounter when using the HUD and cannot see the entire screen.

[0004] The present invention provides the following technical solution: a method for adjusting the eye position of a head-up display, comprising the following steps: Step 1, adjusting the height of the head-up display initially according to the pilot's eye position height using an altitude adjustment mechanism; Step 2, installing a target calibration mechanism on the altitude adjustment mechanism and setting the target plate at a set position on the nose of the aircraft; Step 3, completing fine adjustment of the eye position height by adjusting the position of the crosshair and the target plate in the head-up display.

[0005] A head-up display eye position adjustment device includes: a head-up display connected to the body via a height adjustment mechanism; and a calibration mechanism spaced apart from the head-up display and connected to the height adjustment mechanism.

[0006] Compared with the prior art, the beneficial effects that the above-mentioned at least one technical solution adopted by the present invention can achieve include at least the following: the present invention realizes coarse and fine adjustment of the eye position height of the head-up display through the coordinated cooperation of the height adjustment mechanism and the target calibration mechanism, effectively solves the problem of incomplete field of vision caused by the difference in pilot height, significantly improves the versatility and adaptability of the head-up display, enhances human-machine ergonomics, and ensures flight safety. Attached Figure Description

[0007] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0008] Figure 1 This is a flowchart illustrating an embodiment of the present invention; Figure 2 This is a diagram of the target calibration; Figure 3 This is a diagram showing the installation of a head-up display; Figure 4 This is a diagram showing the components of the height adjustment adapter mechanism; Figure 5 This is a schematic diagram of the fixed interface series of the height adjustment adapter mechanism; Figure 6 This is a diagram of the target calibration mechanism; The attached figures are labeled as follows: 1. Head-up display; 2. Height adjustment mechanism; 21. First adapter bracket; 22. Second adapter bracket; 23. Third adapter bracket; 3. Target calibration mechanism. Detailed Implementation

[0009] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0010] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0011] like Figure 1 As shown, this embodiment provides a method for adjusting eye position on a head-up display, including the following steps: Step 1: Adjust the height of the head-up display using the altitude adjustment mechanism according to the pilot's eye level.

[0012] In practice, the head-up display (HUD), altitude adjustment mechanism, and target calibration mechanism are first removed from the aircraft. Based on the pilot's different seated eye position heights (e.g., referring to the range of 785mm to 861mm for pilots in seated positions P5 to P95 in the National Military Standard GJB 4856-2003), and considering the HUD's eye box size and expected installation height, a coarse adjustment target is determined. The altitude adjustment mechanism includes multiple adapter brackets, each with a series of fixing interfaces. By selecting different series of fixing interfaces, the pylon is installed onto the adapter bracket frame and secured with fasteners, achieving coarse adjustment of the HUD's height. After coarse adjustment, the altitude adjustment mechanism is reinstalled on the aircraft.

[0013] Step 2: Install the target calibration mechanism onto the height adjustment mechanism and set the target plate at the set position on the machine head.

[0014] The target calibration mechanism includes a head-up display mounting bracket, studs, fixing nuts, ball washers, bearings, and fixing bolts. Install the target calibration mechanism onto the height adjustment mechanism and connect it to the head-up display. Position the target plate 30 to 35 meters in front of the machine head (preferably 30 meters); this distance should ensure calibration accuracy. Power on the head-up display; it may display a "HUD NOTCALIBRATED" message, indicating that target calibration is required. The calculation formula is: H = XY * tan3.

[0015] Wherein, tan3 is approximately 0.0524. This formula is based on the principles of optical geometry to ensure that the center point of the target plate is aligned with the designed eye position.

[0016] In addition, based on the height X (in meters) of the designed eye position of the head-up display from the ground, and the distance Y (in meters) between the target plate and the designed eye position of the head-up display, the height H of the center point of the head-up display on the target plate from the ground is calculated.

[0017] Step 3: Fine-tune the eye position height by adjusting the position of the crosshair and the target on the head-up display.

[0018] First, based on the calculated target height H, the position of the target (e.g., a crosshair symbol) is generated on the head-up display (HUD). The pilot or maintenance personnel access the maintenance interface via the in-flight integrated display (MFK), select the "Calibration" subpage, and initiate the "Left HUD Calibration" or "Right HUD Calibration" menu. Observe the relative position of the crosshairs on the HUD and the crosshairs on the target. By adjusting the fixing nuts and studs of the calibration mechanism, the HUD mounting bracket rotates around the bearing, thereby fine-tuning the angle and height of the HUD. Subsequently, use the up / down and left / right adjustment symbols on the MFK to further adjust the display position of the crosshairs on the HUD until they coincide with the symbol on the target. Finally, click the "Complete Calibration" button to save the adjustment results, completing the fine-tuning of the eye level height. See [link to relevant documentation]. Figure 2 As shown.

[0019] like Figures 3 to 6 As shown, this embodiment also provides an eye position adjustment device for a head-up display, including a head-up display 1, a height adjustment mechanism 2, and a target calibration mechanism 3.

[0020] Head-up Display 1: Connected to the aircraft via an altitude adjustment mechanism, used to display flight information.

[0021] Height adjustment mechanism 2 includes a first adapter bracket 21, a second adapter bracket 22, and a third adapter bracket 23. The first adapter bracket 21 is fixed to the main body and connected to the side-facing head-up display 1; the second adapter bracket 22 is fixed to the main body and connected to one end of the target calibration mechanism 3; the third adapter bracket 23 is fixed to the main body and connected to both the target calibration mechanism 3 and the front-facing head-up display 1. Each adapter bracket includes a frame and a hanger. The frame has multiple series of fixing interfaces, allowing for coarse height adjustment by selecting different interfaces. (See [reference]). Figure 4 and Figure 5 As shown.

[0022] The calibration mechanism 3 includes a head-up display mounting bracket, studs, fixing nuts, ball washers, bearings, and fixing bolts. The calibration mechanism 3 is spaced apart from the head-up display 1. By adjusting the position of the nuts and studs, the head-up display mounting bracket rotates around the bearings, thereby achieving fine adjustment of the angle of the head-up display 1 and completing the precise adjustment of the eye position height.

[0023] In one illustrated embodiment, the target calibration process is partially automated. For example, the target position can be automatically measured by a laser rangefinder at a distance Y, and the eye position height X of the head-up display can be obtained via a sensor. The calculation unit automatically calculates the target height H and generates adjustment commands. The position of the crosshairs in the head-up display can be automatically adjusted by a motor-driven calibration mechanism, reducing manual intervention and improving adjustment efficiency and accuracy.

[0024] The height adjustment mechanism can utilize multi-stage telescopic adapter brackets, replacing the fixed interface series. Each adapter bracket includes a telescopic frame section, secured at different height positions via locking devices such as quick-release pins. This design allows for stepless adjustment to accommodate a wider range of pilot heights while reducing disassembly and installation time.

[0025] In another embodiment, the frames of the first adapter bracket, the second adapter bracket, and the third adapter bracket are no longer provided with discrete fixed interfaces, but are instead processed with elongated holes (80mm in length and 9mm in width). The elongated holes are arranged along the height direction, and their extension range covers the 76mm difference in the pilot's eye position height.

[0026] The gantry is connected to the frame via T-bolts passing through elongated holes. The T-bolts are locked in place with wing nuts. After the nuts are loosened, the gantry can slide up and down along the elongated holes to achieve stepless coarse adjustment with an adjustment accuracy of up to 1mm, accommodating pilots of a wider range of heights.

[0027] In another embodiment, the calibration mechanism is integrated with the flight control system. Calibration data (such as adjusted eye level) can be automatically stored and associated with the pilot's identity information. When the same pilot uses the system again, it can automatically recall historical calibration data, quickly restore the eye level settings, and improve operational convenience.

[0028] The calibration mechanism is designed as a portable module, making it compatible with different aircraft. The target plate is either foldable or has an electronic display, minimizing space requirements. The calibration process is synchronized with the head-up display via wireless communication, allowing ground maintenance personnel to perform adjustments remotely, making it suitable for rapid deployment and field maintenance scenarios.

[0029] The above description is merely a specific embodiment of the present invention and should not be construed as limiting the scope of the invention. Therefore, any substitution of equivalent components or equivalent changes and modifications made within the scope of protection of this patent should still fall within the scope of this patent. Furthermore, the technical features, technical features and technical solutions, and technical solutions in this invention can be freely combined and used.

Claims

1. A method for adjusting eye position on a head-up display, characterized in that, Includes the following steps: Step 1: Based on the pilot's eye level, initially adjust the height of the head-up display using the altitude adjustment mechanism; Step 2: Install the target calibration mechanism onto the height adjustment mechanism and set the target plate at the set position on the machine head; Step 3: Fine-tune the eye position height by adjusting the position of the crosshair and the target on the head-up display.

2. The eye position adjustment method for a head-up display according to claim 1, characterized in that, Step one specifically involves: First, remove the head-up display, height adjustment mechanism, and target calibration mechanism; The size of the head-up display's eye box and the expected installation height are designed according to the pilot's different sitting postures and eye positions. The head-up display is then installed on the aircraft body using a height adjustment mechanism according to the expected installation height.

3. The eye position adjustment method for a head-up display according to claim 2, characterized in that, Step two includes: The target calibration mechanism is mounted on the height adjustment mechanism and connected to the head-up display. Set the target plate at a position 30-35m from the head of the machine; Power on the head-up display and perform target calibration.

4. The eye position adjustment method for a head-up display according to claim 3, characterized in that, Step two also includes: Based on the height of the head-up display's designed eye position from the ground and the distance between the target plate and the designed eye position of the head-up display, calculate the height of the center point of the head-up display on the target plate from the ground.

5. The eye position adjustment method for a head-up display according to claim 4, characterized in that, The height of the center point of the head-up display on the target plate from the ground is calculated using the formula H=XY*tan3, where X is the height of the designed eye position of the head-up display from the ground, Y is the distance between the target plate and the designed eye position of the head-up display, and H is the height of the center point of the head-up display on the target plate from the ground.

6. The eye position adjustment method for a head-up display according to claim 5, characterized in that, Step three specifically involves: The position of the target on the head-up display is generated based on the height of the center point of the target on the head-up display from the ground. Align the crosshair on the head-up display with the target on the target board according to the pilot's eye level.

7. An eye position adjustment device for a head-up display, characterized in that, include: A head-up display is connected to the main body via a height adjustment mechanism; The target calibration mechanism is spaced apart from the head-up display and connected to the height adjustment mechanism.

8. The eye position adjustment device for a head-up display according to claim 7, characterized in that, The height adjustment mechanism includes: The first adapter bracket is fixed to the main body and connected to the side-mounted flat panel display; The second adapter bracket is fixed to the body and connected to one end of the target calibration mechanism; The third adapter bracket is fixed to the body and connected to the target calibration mechanism and the forward-facing flat panel display.

Images