Aircraft compass error correction device

Abstract

The utility model discloses a compass error correction device of an aircraft, and particularly relates to the field of correction equipment. Comprising a base, and a magnetic compass is located on the base; the plurality of laser light sources are arranged on the base and are uniformly distributed along the circumference of the magnetic compass, and one laser light source is aligned with the 0-degree scale line of the magnetic compass. The multiple laser light sources are evenly distributed on the base, the positions of the laser light sources correspond to the scale marks of the magnetic compass, the *-shaped grids are formed through laser emitted by the laser light sources, compass error correction is conducted through the *-shaped grids, and the problem that errors are generated during manual scribing drawing can be avoided.

Description

Technical Field

[0001] This application relates to the field of calibration equipment, and more particularly to a correction device for aircraft compass deviation. Background Technology

[0002] With the development of aircraft technology, most modern aircraft now use fiber optic inertial navigation or laser inertial navigation systems for navigation. However, due to various reasons such as technology and funding, a large number of aircraft still use magnetic heading sensors. Because of the inherent characteristics of magnetic heading sensors, they are susceptible to errors due to environmental and time-related factors. To reduce these errors, compass correction and comparison with geomagnetic data are usually required to ensure that the error is within an acceptable range.

[0003] In existing technologies, geomagnetic comparison requires drawing a north-south shaped line on the ground, and this line needs to be redrawn depending on local conditions. During the drawing process, a magnetic compass is used to determine the direction before drawing the line, which is then used for compass error correction. However, due to the short length of the drawn line and the large size of the aircraft, the line is often extended to ensure accurate direction comparison with the aircraft and to guarantee the accuracy of the correction. This process is not only repetitive and time-consuming but also increases errors due to human factors. Utility Model Content

[0004] The main objective of this application is to provide an aircraft compass error correction device, which aims to solve the problem of errors caused by human factors in existing compass error correction methods.

[0005] To achieve the above objectives, this application provides an aircraft compass error correction device, comprising: a base; a magnetic compass disposed on the base; and a plurality of laser light sources disposed on the base and evenly distributed along the circumference of the magnetic compass, wherein one of the laser light sources is aligned with the 0° graduation line of the magnetic compass.

[0006] Optionally, the lasers emitted by two adjacent laser sources form a 45° angle.

[0007] Optionally, the base is provided with a groove adapted to the magnetic compass, and the magnetic compass is in the groove.

[0008] Optionally, the base is provided with slots adapted to the laser light source, and the laser light source is located in the slots.

[0009] Optionally, the base is shaped like a frustum.

[0010] Optionally, the laser source is located on the outer edge of the base.

[0011] Optionally, the laser source is a laser scribing instrument.

[0012] Compared with the prior art, the beneficial effects of this application are as follows:

[0013] The compass error correction device for aircraft of this utility model has multiple laser light sources evenly distributed on the base, so that the position of the laser light sources corresponds to the scale lines of the magnetic compass. The lasers emitted by the laser light sources form a "rice" grid, and the compass error is corrected by the "rice" grid, which can avoid the error problem caused by manual drawing and marking. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a correction device for an aircraft according to this application;

[0015] Figure 2 This is a schematic diagram of the base structure in an aircraft compass correction device according to this application.

[0016] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0018] An embodiment of this utility model provides an aircraft compass deviation correction device, such as... Figure 1 As shown, it includes a magnetic compass 1, a base 2, and multiple laser light sources 3, such as... Figure 2 As shown, a groove 4 adapted to the magnetic compass 1 is provided on the base 2, and the magnetic compass 1 is located in the groove 4; multiple laser light sources 3 are arranged on the base 2 and evenly distributed along the circumference of the magnetic compass 1. For example, a 45° angle is formed between two adjacent laser light sources 3, and the center of one laser light source 3 is aligned with the 0° scale line of the magnetic compass 1, which ensures that the 45°, 90°, 135°, 180°, 225°, 270°, and 315° scale lines of the magnetic compass 1 are aligned with the centers of the remaining laser light sources 3 respectively.

[0019] In this embodiment, multiple laser light sources 3 are evenly distributed on the base 2, so that the position of the laser light sources 3 corresponds to the scale line of the magnetic compass 1. The laser emitted by the laser light sources 3 forms a "rice" grid. The compass error is corrected by the "rice" grid, which can avoid the error problem caused by manually drawing lines.

[0020] Furthermore, the base 2 is provided with slots 5 that are adapted to the laser source 3, and the laser source 3 is located in the slots 5.

[0021] Exemplarily, the shape of the base 2 is frustum-shaped, and the magnetic compass 1 is located at the center of the frustum surface. The laser light source 3 is a laser scribing instrument, which ensures the regularity of the "cross" grid. Compared with the traditional manual scribing, it can be fast and convenient and obtain a relatively accurate calibration line.

[0022] The working principle of the deviation correction device for aircraft of the present utility model is as follows:

[0023] Place the base 2 on the horizontal ground. According to the direction of the pointer of the magnetic compass 1, align the due north or due south of the magnetic compass 1 with any one of the laser light sources 3, and obtain a regular "cross" grid with an interval of 45° on the magnetic compass 1, as shown in Figure 1 . Turn on the laser light source 3, push the aircraft above the deviation correction device for aircraft, and adjust the compensation device of the magnetic heading sensor to make the indication of the magnetic heading sensor consistent with the "cross" grid; since a laser light source 3 is set every 45°, during the correction process, a light source prompt every 45° will be obtained, and the deviation correction is carried out accordingly, which can ensure the accuracy of the correction and reduce the deviation in each direction.

[0024] The above are only the preferred embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present application, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present application.

Claims

1. A correction device for aircraft compass deviation, characterized in that, include: Base; A magnetic compass is mounted on the base; Multiple laser light sources are disposed on the base and evenly distributed along the circumference of the magnetic compass, with one of the laser light sources aligned with the 0° scale line of the magnetic compass.

2. The aircraft compass correction device according to claim 1, characterized in that, The lasers emitted by two adjacent laser sources form a 45° angle.

3. The aircraft compass correction device according to claim 1, characterized in that, The base has a groove adapted to the magnetic compass, and the magnetic compass is located in the groove.

4. The aircraft compass correction device according to claim 1, characterized in that, The base is provided with slots adapted to the laser light source, and the laser light source is located in the slots.

5. The aircraft compass correction device according to claim 1, characterized in that, The base is shaped like a frustum.

6. The aircraft compass correction device according to claim 1, characterized in that, The laser source is distributed on the outer edge of the base.

7. The aircraft compass correction device according to claim 1, characterized in that, The laser source is a laser scribing instrument.

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