阅读说明：本技术 一种用于吊装式平视显示器的校靶系统及校靶方法 (Target correcting system and method for hoisting type head-up display ) 是由 郭明辉 王威 刘晓飞 于 2020-11-19 设计创作，主要内容包括：本发明涉及一种用于吊装式平视显示器的校靶系统及校靶方法,校靶系统包括靶板装置,激光跟踪仪,校靶镜以及终端显示设备。校靶系统的靶板装置和激光跟踪仪位于飞机外部,校靶镜和显示终端位于飞机的驾驶舱中。校靶时,激光跟踪仪采集飞机上机体两侧的标识点信息,确定校靶系统靶板装置的靶面图案中心点的空间位置即靶板装置得位置,采用校靶镜进行靶面图像的采集,通过视频采集设备由校靶镜和靶面得到需要调整飞机平显装置的调整误差,调整平视显示器的安装支架姿态。本发明使得大型民用客机的校靶流程进行优化,且靶板的放置距离缩短为10米,实现飞机机库校靶,大大降低校靶过程的环境要求,减少校靶流程,提升飞机校靶效率。(The invention relates to a target correcting system and a target correcting method for a hoisting type head-up display. The target plate device and the laser tracker of the target correcting system are positioned outside the airplane, and the target correcting mirror and the display terminal are positioned in the cockpit of the airplane. During target correction, the laser tracker collects identification point information of two sides of an upper airframe of the airplane, the spatial position of a target surface pattern central point of a target plate device of a target correction system, namely the position of the target plate device, is determined, a target surface image is collected by the target correcting lens, an adjustment error of the airplane head-up display device to be adjusted is obtained by the target correcting lens and the target surface through video collection equipment, and the attitude of a mounting support of the head-up display is adjusted. The invention optimizes the boresight process of the large civil airliner, shortens the placing distance of the target plate to 10 meters, realizes the boresight of the airplane hangar, greatly reduces the environmental requirement of the boresight process, reduces the boresight process and improves the boresight efficiency of the airplane.)

1. A target correcting system for a hoisting type head-up display is characterized by comprising a target plate device (1), a laser tracker (2), a target correcting mirror (3) and a terminal display device (4); the target correcting mirror and the terminal display device are positioned in a cockpit of the airplane, wherein the target correcting mirror is arranged at the head-up display part of the cockpit of the airplane instead of the head-up display, and the optical axis of the target correcting mirror is superposed with the display optical axis of the hoisted HUD; the borescope comprises a monocular (5), a telephoto lens (7) and a camera (8) which are arranged according to a light path, and a switching mechanism (9) positioned on the borescope, wherein the monocular (5) is provided with a differentiation scale plate (6), and the optical axis of the monocular penetrates through an O point of the differentiation scale plate; and after the target correcting mirror and the mounting bracket on the machine are mounted by the switching mechanism (9), the coincidence of the optical axis of the target correcting mirror and the display optical axis of the hoisted HUD is ensured.

2. The boresight system for a heads-up display of claim 1, wherein: and the mechanical interface of the switching mechanism (9) is provided with an azimuth and pitching adjusting mechanism.

3. The boresight system for a heads-up display of claim 1, wherein: the target plate device comprises a base (12), an adjusting mechanism (11), a level meter (14), a vertical meter (16) and a target surface (15); the base (12) is connected with a target surface (15) through an adjusting mechanism (11), and a level gauge (14) and a vertical gauge (16) are arranged on the target surface (15); the adjusting mechanism (11) comprises adjusting mechanisms in three directions of XYZ axes; the target surface (15) is provided with a cross-shaped reticle and a circle pattern.

4. The boresight system for a heads-up head-up display of claim 3, wherein: a plurality of adjusting bolts (13) are arranged on the base (12).

5. The boresight system for a heads-up display of claim 1, wherein: the scale of each grid of the differentiation scale plate (6) is 1 mrad.

6. A method for calibrating a target system of a ceiling-mounted head-up display by using the system as claimed in any one of claims 1 to 5, characterized by the steps of: the method comprises the following steps:

step 1: fixing the boresight to a head-up display mounting bracket of an aircraft cockpit through a mounting bolt of a switching mechanism, and adjusting an azimuth and pitching adjusting mechanism on the switching mechanism to enable the optical axis of the boresight to be superposed with the display optical axis of the hoisted HUD;

step 2: the laser tracker (2) collects information of a plurality of identification points of an airplane body at any position to obtain eye coordinates of an airplane cabin;

the laser tracker (2) converts the space coordinates of the theoretical position of the center point of the target surface pattern according to the coordinates of the eye position: the intersection point of the vertical plane which is 10 meters away from the right front of the eye position coordinate and the axis which is 3 degrees below the eye position coordinate;

and step 3: the target plate device is arranged on a space coordinate of a theoretical position of the central point of the target surface pattern, and the adjusting bolts on the base are adjusted according to the indication of the level meter (14) and the vertical meter (16), so that the bottom of the target surface (15) and the target surface (15) are in a horizontal and vertical state;

and 4, step 4: adjusting an objective lens of the monocular telescope (5) to image the target surface pattern of which the length is more than 10 meters on the reticle (6), and adjusting an eyepiece lens of the monocular telescope (4) to enable the target surface pattern and the reticle to be clearly visible;

and 5: the reticle of the reticle (5) and the target surface pattern information of the target plate device 1 are shot by a telephoto lens (6) and a camera (7) and then transmitted to a terminal display device (10) through a video interface; the pattern information shows that the center position of the target surface pattern has a coordinate difference with the center of the reticle;

and 5: adjusting the mounting bracket attitude of the head-up display according to the coordinate error such that the reticle 0 point is within the range of the circular pattern.

Technical Field

The invention belongs to the field of HUD (head up display) target correction of civil airplanes, and relates to a target correction system and a target correction method for a hoisting type head-up display.

Background

The head-up display is widely applied to fighters, large transport planes and large passenger planes with excellent performance, and can collimate required related information through a collimation optical system to obtain 1: 1, imaging at "infinity" in front of the driver, overlapping with the cabin exterior scene/target; the driver can simultaneously view the display information of each state in the vehicle and the real external scene/target information. The eyes of the driver are naturally relaxed when the head-up display is used, the repeated switching and focusing between the 'watching external scene/target' and the 'watching the instrument display in the cockpit' are not needed, and the interpretation response time is saved by about 2.5 seconds.

To ensure that information 1 is displayed: imaging 1 is at "infinity" in front of the pilot, and the pilot can see the accuracy of the cockpit external view/target simultaneously, requiring boresighting the HUD during installation to ensure the accuracy of the picture display position projected by the HUD into the pilot's field of view. For a ceiling-mounted head-up display, the alignment of the mounting bracket ensures that the display optical axis of the HUD is as desired.

The process of boresighting usually needs to make the aircraft leveling, adjusts the target plate to the anticipated position through equipment such as theodolite, shoots through the boresight of hoist and mount on the installing support, carries out image recognition to the display frame of target plate, confirms HUD installing support's adjustment step. The method has complex implementation process, high operation difficulty and high consumption of manpower and material resources.

Disclosure of Invention

Technical problem to be solved

In order to avoid the defects of the prior art, the invention provides a boresight system and a boresight method for a hoisting type head-up display, which provide a set of simple and easy-to-operate equipment for boresight personnel, realize that an airplane does not need to be leveled, quickly and visually realize boresight operation steps, shorten the placement distance of a target plate to 10 meters, realize that the airplane finishes boresight in a hangar, greatly reduce the environmental requirements of the boresight process, reduce boresight flow and improve the boresight efficiency of the airplane.

Technical scheme

A target correcting system for a hoisting type head-up display is characterized by comprising a target plate device 1, a laser tracker 2, a target correcting mirror 3 and a terminal display device 4; the target correcting mirror and the terminal display device are positioned in a cockpit of the airplane, wherein the target correcting mirror is arranged at the head-up display part of the cockpit of the airplane instead of the head-up display, and the optical axis of the target correcting mirror is superposed with the display optical axis of the hoisted HUD; the borescope comprises a monocular telescope 5, a telephoto lens 7, a camera 8 and a switching mechanism 9, wherein the monocular telescope 5, the telephoto lens 7 and the camera are arranged according to a light path, the switching mechanism 9 is positioned on the borescope, a differentiation scale plate 6 is arranged on the monocular telescope 5, and an optical axis of the monocular telescope penetrates through an O point of the differentiation scale plate; the switching mechanism 9 ensures that the optical axis of the target correcting mirror coincides with the display optical axis of the hoisted HUD after the target correcting mirror and the mounting bracket on the machine are mounted.

And the mechanical interface of the switching mechanism 9 is provided with an azimuth and pitching adjusting mechanism.

The target plate device comprises a base 12, an adjusting mechanism 11, a level gauge 14, a vertical gauge 16 and a target surface 15; the base 12 is connected with a target surface 15 through an adjusting mechanism 11, and a level gauge 14 and a vertical gauge 16 are arranged on the target surface 15; the adjusting mechanism 11 includes three-direction adjusting mechanisms of XYZ axes; the target surface 15 is provided with a cross-shaped reticle and a circle pattern.

A plurality of adjusting bolts 13 are arranged on the base 12.

The differentiation scale plate 6 has a scale of 1mrad per cell.

A target calibration method of a target calibration system for a hoisting type head-up display by adopting the system is characterized by comprising the following steps:

step 1: fixing the boresight to a head-up display mounting bracket of an aircraft cockpit through a mounting bolt of a switching mechanism, and adjusting an azimuth and pitching adjusting mechanism on the switching mechanism to enable the optical axis of the boresight to be superposed with the display optical axis of the hoisted HUD;

step 2: the laser tracker 2 collects information of a plurality of identification points of an airplane body at any position to obtain eye coordinates of an airplane cabin;

the laser tracker 2 converts the space coordinates of the theoretical position of the center point of the target surface pattern according to the coordinates of the eye position: the intersection point of the vertical plane which is 10 meters away from the right front of the eye position coordinate and the axis which is 3 degrees below the eye position coordinate;

and step 3: the target plate device is arranged on the space coordinate of the theoretical position of the central point of the target surface pattern, and the adjusting bolts on the base are adjusted according to the indication of the level meter 14 and the vertical meter 16, so that the bottom of the target surface 15 and the target surface 15 are in a horizontal and vertical state;

and 4, step 4: adjusting an objective lens of the monocular telescope 5 to image the target surface pattern of which the length is more than 10 meters on the reticle 6, and adjusting an eyepiece lens of the monocular telescope 4 to ensure that the target surface pattern and the imaging of the reticle are clear and visible;

and 5: shooting the scribed lines of the reticle 5 and the target surface pattern information of the target plate device 1 by a telephoto lens 6 and a camera 7, and transmitting the shot information to a terminal display device 10 through a video interface; the pattern information shows that the center position of the target surface pattern has a coordinate difference with the center of the reticle;

and 5: adjusting the mounting bracket attitude of the head-up display according to the coordinate error such that the reticle 0 point is within the range of the circular pattern.

Advantageous effects

The invention provides a target correcting system and a target correcting method for a hoisting type head-up display, wherein the target correcting system comprises a target plate device, a laser tracker, a target correcting lens and a terminal display device (comprising an image acquisition device), wherein the target plate device consists of a base, an adjusting mechanism and a target surface, the target correcting lens consists of a monocular telescope with differentiation scale lines, a telephoto lens, a camera and a switching mechanism, and the terminal display device consists of a video acquisition device and a display screen. The target plate device and the laser tracker of the target correcting system are positioned outside the airplane, and the target correcting mirror and the display terminal are positioned in the cockpit of the airplane.

During target correction, a laser tracker collects identification point information on two sides of an airplane body on an airplane, the spatial position of a target surface pattern central point of a target plate device of a target correction system is determined, the target plate device is arranged at the spatial position, a target surface image is collected by a target correcting lens, the pattern information on the target surface at a far distance is imaged at a reticle of a monocular by adjusting the focal length of an objective lens of the monocular, and a telephoto lens and a camera at the rear end of the monocular telescope clearly image the target surface image and a differentiation scale mark at the same time by adjusting the focal length of an eyepiece; and obtaining an adjustment error of the plane head-up display device needing to be adjusted, namely the deviation between the center of the target surface and the center of the reticle, from the target correcting mirror and the target surface through the video acquisition equipment. Adjusting the mounting bracket attitude of the head-up display according to the error such that the reticle 0 point is within the range of the circular pattern.

The invention optimizes the boresight process of the large civil airliner, does not need to carry out plane leveling work any more, shortens the placement distance of the target plate to 10 meters, realizes the boresight of the plane hangar, greatly reduces the environmental requirement of the boresight process, reduces the boresight process and improves the boresight efficiency of the plane.

Drawings

FIG. 1 is a schematic view of the composition of the present invention

FIG. 2 is a schematic view of the distribution of the system of the present invention inside and outside the aircraft cabin

FIG. 3 is a schematic view of a borescope structure

FIG. 4 is a schematic view of a borescope lens

FIG. 5 is a schematic view of a target plate device

FIG. 6 is a flow chart of a boresight method of the present invention

FIG. 7 is a schematic diagram showing the difference between the pattern center position of the target surface and the coordinate appearing at the reticle center

1-target plate device, 2-laser tracker, 3-target correcting mirror, 4-terminal display equipment (including video acquisition card), 5-monocular telescope, 6-differentiation plate, 7-telephoto lens, 8-camera, 9-switching mechanism, 11-adjusting mechanism, 12-base, 13-three adjusting bolts, 14-horizontal plane, 15-target surface and 16-vertical instrument.

Detailed Description

The invention will now be further described with reference to the following examples and drawings:

the target correcting device comprises a target plate device, a laser tracker, a target correcting mirror and a terminal display device (comprising a video collecting card), wherein the target plate device consists of a base, an adjusting mechanism and a target surface, the target correcting mirror consists of a single-tube telescope comprising a differentiation plate, a telephoto lens, a camera and a switching mechanism, and the terminal display device consists of the video collecting card and a display screen.

The target plate device is provided with a target surface with a cross-shaped reticle and a circular pattern, and the target surface is arranged on the target plate base through an adjusting mechanism; the adjusting mechanism can realize the up-down, left-right and front-back movement of the target surface, and the target plate base can realize the adjustment of the target surface in the horizontal and rolling directions by +/-10 degrees through the adjusting bolt; the target plate device also comprises two water bubbles for judging whether the target surface is horizontal or not by the adjusting state of the base adjusting bolt.

The laser tracker is used for identifying mark points on the machine so as to calculate and determine the theoretical spatial position of the central point of the target surface pattern of the target plate device of the target correcting system.

The borescope include: a monocular telescope with a differentiation plate, a telephoto lens, a camera and a switching mechanism.

The distance between two grids of the dividing scale lines on the differentiating plate of the monocular telescope containing the differentiating plate is not more than 1mrad, the focal length of the monocular telescope is adjustable, and target surface patterns with the length of 10 meters are imaged on the position of the differentiating plate; the long-focus lens and the camera are used for displaying picture shooting, wherein the long-focus lens is a lens with a focal length larger than a first distance.

The switching mechanism comprises the functions of azimuth adjustment and pitching adjustment, so that the optical axis of the monocular telescope is ensured to coincide with the theoretical optical axis of the onboard HUD.

The terminal display equipment consists of a video acquisition card and a display screen, is used for acquiring and displaying a target plate display picture and a reticle scale mark shot by a target acquisition mirror, and is used for visually confirming the state of a target correction process by a target corrector;

the target calibration method comprises the following steps:

obtaining position data of the cross center of the target plate through a laser tracker; the method comprises the steps that a target correcting mirror obtains image information of a cross center of a target plate and scales of a reticle; acquiring deviation information data from image information displayed by a display terminal; determining the operation action of target correction according to the deviation information data, and whether the target correction is finished or not, and correcting the deviation data of the target;

obtaining positional data of a target plate cross center by a laser tracker, comprising: the theoretical space position of the target surface pattern central point of a target plate device of a target correcting system is determined through calculation by acquiring information of identification points on a machine through a laser tracker, and the target plate is adjusted in six directions, namely front, back, left, right, up and down through an adjusting mechanism, so that the target surface pattern central point is moved to the theoretical space position determined by the laser tracker;

the image information that target plate cross center and reticle scale were obtained to the school target mirror includes: the monocular telescope images pattern information on a distant target surface at a reticle of the monocular telescope through the display objective lens, and the telephoto lens and the camera shoot reticle lines of the reticle and the pattern information of the target surface and then transmit the information to the terminal display device through the video interface;

acquiring deviation information data from image information displayed by a display terminal, comprising: identifying a cross scribe line and a circle of the target surface; identifying scale lines of a reticle and O points of the reticle; identifying the offset between a cross-shaped reticle of the target surface, a circular pattern and a 0 point of the reticle;

determining the operation action of boresighting according to the deviation information data, and judging whether boresighting is finished or not, wherein the boresighting deviation data comprises the following steps: confirming whether the target calibration work is finished or not according to whether the 0 point of the reticle is in the range of the circular pattern or not, finishing the target calibration work when the 0 point of the reticle is in the range of the circular pattern, and recording the horizontal, pitching and rolling deviations of the cross-shaped reticle of the target surface and the 0 point of the reticle; when the point 0 of the reticle is positioned outside the circular pattern, the next operation action of target calibration is determined according to the quadrant of the cross reticle of the target surface on which the point 0 of the reticle is positioned.

The method comprises the following specific steps:

a target calibration method of a target calibration system for a hoisting type head-up display by adopting the system is characterized by comprising the following steps:

step 1: fixing the boresight to a head-up display mounting bracket of an aircraft cockpit through a mounting bolt of a switching mechanism, and adjusting an azimuth and pitching adjusting mechanism on the switching mechanism to enable the optical axis of the boresight to be superposed with the display optical axis of the hoisted HUD;

step 2: the laser tracker 2 collects information of a plurality of identification points of an airplane body at any position to obtain eye coordinates of an airplane cabin;

the laser tracker 2 converts the space coordinates of the theoretical position of the center point of the target surface pattern according to the coordinates of the eye position: the intersection point of the vertical plane which is 10 meters away from the right front of the eye position coordinate and the axis which is 3 degrees below the eye position coordinate; (as shown in FIG. 2)

And step 3: the target plate device is arranged on the space coordinate of the theoretical position of the central point of the target surface pattern, and the adjusting bolts on the base are adjusted according to the indication of the level meter 14 and the vertical meter 16, so that the bottom of the target surface 15 and the target surface 15 are in a horizontal and vertical state;

and 4, step 4: adjusting an objective lens of the monocular telescope 5 to image the target surface pattern of which the length is more than 10 meters on the reticle 6, and adjusting an eyepiece lens of the monocular telescope 4 to ensure that the target surface pattern and the imaging of the reticle are clear and visible;

and 5: shooting the scribed lines of the reticle 5 and the target surface pattern information of the target plate device 1 by a telephoto lens 6 and a camera 7, and transmitting the shot information to a terminal display device 10 through a video interface; the pattern information shows that the center position of the target surface pattern has a coordinate difference with the center of the reticle; as shown in fig. 7.

And 5: adjusting the mounting bracket attitude of the head-up display according to the coordinate error such that the reticle 0 point is within the range of the circular pattern.