High-precision electronic compass calibration mechanism

Abstract

The utility model discloses a high-precision electronic compass calibration mechanism which comprises a base, a worm gear is rotatably mounted at the top of the base and meshed with a first worm, the first worm is rotatably mounted on the base, the worm gear can be driven to rotate by rotating the first worm, and the worm gear can drive a horizontal rotating seat to rotate in a horizontal plane. A second worm is rotated to drive the vertical rotating seat to slide at the top of the horizontal rotating seat, so that the electronic compass mounted at the top of the vertical rotating seat can be driven to rotate in a vertical plane, and the horizontal direction of the electronic compass is adjusted; the vertical inclination angle of the electronic compass is adjusted, output errors of the electronic compass at different inclination angles are tested, calibration of the electronic compass is completed through the output errors, and the electronic compass calibration device is simple in structure, small in size, convenient to move and carry and low in production and manufacturing cost, so that the detection or calibration cost can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to electronic compass calibration technical field especially is related to a high accuracy electronic compass calibration mechanism. BACKGROUND

[0002] Electronic compass, also known as digital compass, has been widely used as navigation instrument or attitude sensor in modern technology conditions. Compared with traditional pointer type and gimbal structure compass, electronic compass has low energy consumption, small size, light weight, high precision and miniaturization, and its output signal can be realized digital display through processing, so it is widely used in aviation, aerospace, robot, navigation, vehicle autonomous navigation and other fields. The existing electronic compass calibration device usually adopts a turntable with a moving shaft to realize it. When detecting or calibrating the compass, the electronic compass is placed on the test table of the turntable, the test table is rotated to a certain angle scale as a reference angle, and the difference between the reference angle and the output angle of the compass is calculated to obtain the output error of the electronic compass. The output error of the electronic compass under different inclination angles is tested, and the calibration of the electronic compass is completed through the output error. However, the volume and weight of the turntable are usually large, which is not convenient to move and carry, and the price of the turntable is expensive, thus increasing the detection or calibration cost. SUMMARY

[0003] The utility model aims at overcoming the above technical defects, and provides a high accuracy electronic compass calibration mechanism to solve the technical problem that the existing electronic compass calibration device usually adopts a turntable with a moving shaft to realize it, but the volume and weight of the turntable are usually large, which is not convenient to move and carry, and the price of the turntable is expensive, thus increasing the detection or calibration cost.

[0004] To achieve the above technical purpose, the technical scheme of the utility model provides a high accuracy electronic compass calibration mechanism, which comprises a base, a worm wheel rotatably installed on the top of the base, a first worm gear engaged with the worm wheel, a first worm shaft rotatably installed on the base, a horizontal rotating seat installed on the top of the worm wheel, an arc-shaped structure on the top of the horizontal rotating seat, a calibration mechanism further comprising a vertical rotating seat, the vertical rotating seat being used for installing an electronic compass, the bottom of the vertical rotating seat being an arc-shaped structure and being slidably connected with the top of the horizontal rotating seat, the bottom of the vertical rotating seat being provided with a helical gear, the helical gear being engaged with a second worm gear, and the second worm gear being rotatably installed on the vertical rotating seat.

[0005] Further, the top of the base is provided with a first mounting groove, the worm wheel is rotatably installed in the first mounting groove, the top of the base is provided with a second mounting groove communicating with the first mounting groove, and the first worm shaft is rotatably installed in the second mounting groove.

[0006] Further, a rotating shaft is installed at the center of the worm wheel, and the lower end of the rotating shaft is rotatably installed at the bottom of the first mounting groove through a bearing.

[0007] Further, one end of the first worm extends from inside the second mounting slot and is provided with a first knob.

[0008] Further, the horizontal rotating seat is provided with an arc-shaped sliding groove at the top, and the vertical rotating seat is provided with an arc-shaped sliding block at the bottom, which is slidingly arranged in the arc-shaped sliding groove.

[0009] Further, the vertical rotating seat is provided with a third mounting slot in communication with the arc-shaped sliding groove.

[0010] Further, the second worm is rotatably arranged in the third mounting slot.

[0011] Further, one end of the second worm extends from inside the third mounting slot and is provided with a second knob.

[0012] The high-precision electronic compass calibration mechanism has the advantages that: the first worm is rotated to drive the worm gear to rotate, the worm gear drives the horizontal rotating seat to rotate in the horizontal plane, thereby driving the electronic compass installed at the top of the vertical rotating seat to rotate in the horizontal plane, the horizontal position of the electronic compass is adjusted, the second worm is rotated to drive the vertical rotating seat to slide on the top of the horizontal rotating seat, thereby driving the electronic compass installed at the top of the vertical rotating seat to rotate in the vertical plane, the vertical inclination of the electronic compass is adjusted, the output error of the electronic compass under different inclination angles is tested, the calibration of the electronic compass is completed through the output error, the structure is simple, the volume is small, the electronic compass can be conveniently moved and carried, the production and manufacturing cost is low, and therefore the detection or calibration cost can be reduced. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a high-precision electronic compass calibration mechanism structure schematic view of the embodiment of the utility model;

[0014] Figure 2 is another state of the high-precision electronic compass calibration mechanism structure schematic view of the embodiment of the utility model;

[0015] Figure 3 is a high-precision electronic compass calibration mechanism transverse sectional view of the embodiment of the utility model;

[0016] Figure 4 is a high-precision electronic compass calibration mechanism longitudinal sectional view of the embodiment of the utility model;

[0017] In the drawing: 1, base; 11, first mounting slot; 12, second mounting slot; 2, worm gear; 21, rotating shaft; 3, first worm; 31, first knob; 4, horizontal rotating seat; 41, arc-shaped sliding groove; 5, vertical rotating seat; 51, helical tooth; 52, arc-shaped sliding block; 53, third mounting slot; 6, second worm; 61, second knob. DETAILED DESCRIPTION

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0019] This utility model embodiment provides a high-precision electronic compass calibration mechanism, such as... Figures 1-4 As shown, the device includes a base 1, with a worm gear 2 rotatably mounted on the top of the base 1. The worm gear 2 meshes with a first worm 3, which is rotatably mounted on the base 1. A horizontal rotating seat 4 is mounted on the top of the worm gear 2, and the top of the horizontal rotating seat 4 has an arc-shaped structure. The calibration mechanism also includes a vertical rotating seat 5, which can be used to mount an electronic compass. The bottom of the vertical rotating seat 5 has an arc-shaped structure and is slidably connected to the top of the horizontal rotating seat 4. The bottom of the vertical rotating seat 5 is provided with helical teeth 51, which mesh with a second worm 6. The second worm 6 is rotatably mounted on the vertical rotating seat 5. Rotating the first worm 3 can drive the worm gear 2 to rotate, and the worm gear 2 can drive the water... The horizontal rotating base 4 rotates in the horizontal plane, thereby driving the electronic compass mounted on the top of the vertical rotating base 5 to rotate in the horizontal plane, adjusting the horizontal orientation of the electronic compass. By rotating the second worm gear 6, the vertical rotating base 5 can slide on the top of the horizontal rotating base 4, thereby driving the electronic compass mounted on the top of the vertical rotating base 5 to rotate in the vertical plane, adjusting the vertical tilt angle of the electronic compass. The output error of the electronic compass at different tilt angles is tested, and the electronic compass is calibrated by the output error. The structure is simple, the size is small, and it is easy to move and carry. At the same time, the manufacturing cost is low, thus reducing the testing or calibration cost.

[0020] In this embodiment, the top of the base 1 is provided with a first mounting groove 11, which is a disc-shaped structure. The worm gear 2 is rotatably installed inside the first mounting groove 11. The top of the base 1 is provided with a second mounting groove 12 that communicates with the first mounting groove 11. The second mounting groove 12 is a cylindrical structure. The first worm 3 is rotatably installed inside the second mounting groove 12.

[0021] It should be noted that a rotating shaft 21 is installed at the center of the worm gear 2. The lower end of the rotating shaft 21 is rotatably installed at the bottom of the first mounting groove 11 through a bearing. The two ends of the first worm 3 are respectively rotatably installed at the two ends of the second mounting groove 12 through bearings.

[0022] To facilitate the user's manual rotation of the first worm gear 3, one end of the first worm gear 3 extends from the inside of the second mounting groove 12 and is fitted with a first knob 31. At the same time, the outer wall of the first knob 31 is provided with an anti-slip groove to prevent the user's hand from slipping when rotating the first worm gear 3.

[0023] In the embodiment, the horizontal rotating seat 4 is provided with an arc-shaped sliding groove 41 at the top, the vertical rotating seat 5 is provided with an arc-shaped sliding block 52 at the bottom, and the oblique tooth 51 is arranged at the bottom of the arc-shaped sliding block 52. The arc-shaped sliding block 52 is slidably arranged in the arc-shaped sliding groove 41, and the longitudinal section of the arc-shaped sliding groove 41 and the arc-shaped sliding block 52 is a T-shaped structure, so that the bottom of the vertical rotating seat 5 and the top of the horizontal rotating seat 4 are slidably connected. In other embodiments, the arc-shaped sliding groove 41 is arranged at the bottom of the vertical rotating seat 5, and the arc-shaped sliding block 52 is arranged at the top of the horizontal rotating seat 4, so that the bottom of the vertical rotating seat 5 and the top of the horizontal rotating seat 4 are slidably connected.

[0024] In the embodiment, the vertical rotating seat 5 is internally provided with a third mounting groove 53 communicated with the arc-shaped sliding groove 41, and the third mounting groove 53 is a cylindrical structure. The second worm 6 is rotatably arranged in the third mounting groove 53.

[0025] It should be noted that the second worm 6 is rotatably arranged in the third mounting groove 53 through bearings at both ends.

[0026] In order to facilitate the user to rotate the second worm 6 by hand, one end of the second worm 6 extends out of the third mounting groove 53 and is provided with a second knob 61. Meanwhile, the outer wall of the second knob 61 is provided with an anti-skid groove, so as to avoid the user from slipping when rotating the second worm 6.

[0027] The high-precision electronic compass calibration mechanism of the embodiment of the utility model, through rotating the first worm 3 can drive the worm gear 2 to rotate, the worm gear 2 can drive the horizontal rotating seat 4 to rotate in the horizontal plane, so as to drive the electronic compass installed at the top of the vertical rotating seat 5 to rotate in the horizontal plane, adjust the horizontal orientation of the electronic compass, through rotating the second worm 6 can drive the vertical rotating seat 5 to slide at the top of the horizontal rotating seat 4, so as to drive the electronic compass installed at the top of the vertical rotating seat 5 to rotate in the vertical plane, adjust the vertical inclination angle of the electronic compass, test the output error of the electronic compass under different inclination angles, and complete the calibration of the electronic compass through the output error, simple structure, small volume, can be moved and carried conveniently, and the production cost is low, so the detection or calibration cost can be reduced.

[0028] The specific implementation manner of the utility model described above does not constitute a limitation on the protection scope of the utility model. Any various other corresponding changes and modifications made according to the technical concept of the utility model should be included in the protection scope of the utility model claim.

Claims

1. A high-precision electronic compass calibration mechanism, characterized in that, The calibration mechanism includes a base (1), on which a worm gear (2) is rotatably mounted. The worm gear (2) meshes with a first worm (3), which is rotatably mounted on the base (1). A horizontal rotating seat (4) is mounted on the top of the worm gear (2). The top of the horizontal rotating seat (4) has an arc-shaped structure. The calibration mechanism also includes a vertical rotating seat (5), which can be used to mount an electronic compass. The bottom of the vertical rotating seat (5) has an arc-shaped structure and is slidably connected to the top of the horizontal rotating seat (4). The bottom of the vertical rotating seat (5) is provided with helical teeth (51), which mesh with a second worm (6). The second worm (6) is rotatably mounted on the vertical rotating seat (5).

2. The high-precision electronic compass calibration mechanism according to claim 1, characterized in that, The base (1) has a first mounting groove (11) on its top, and the worm gear (2) is rotatably installed inside the first mounting groove (11). The base (1) has a second mounting groove (12) on its top that communicates with the first mounting groove (11), and the first worm (3) is rotatably installed inside the second mounting groove (12).

3. The high-precision electronic compass calibration mechanism according to claim 2, characterized in that, The worm gear (2) has a rotating shaft (21) installed at its center, and the lower end of the rotating shaft (21) is rotatably mounted at the bottom of the first mounting groove (11) via a bearing.

4. The high-precision electronic compass calibration mechanism according to claim 2, characterized in that, One end of the first worm (3) extends out from the inside of the second mounting groove (12) and is fitted with a first knob (31).

5. The high-precision electronic compass calibration mechanism according to claim 1, characterized in that, The horizontal rotating seat (4) has an arc-shaped groove (41) at the top and an arc-shaped slider (52) at the bottom of the vertical rotating seat (5). The arc-shaped slider (52) is slidably disposed inside the arc-shaped groove (41).

6. The high-precision electronic compass calibration mechanism according to claim 5, characterized in that, The vertical rotating seat (5) is provided with a third mounting groove (53) that communicates with the arc-shaped sliding groove (41).

7. The high-precision electronic compass calibration mechanism according to claim 6, characterized in that, The second worm (6) is rotatably mounted inside the third mounting slot (53).

8. The high-precision electronic compass calibration mechanism according to claim 7, characterized in that, One end of the second worm (6) extends out from inside the third mounting groove (53) and is fitted with a second knob (61).

Images