Laser projection celestial coordinate teaching aid

Abstract

The utility model discloses a laser projection celestial coordinate teaching aid. The laser projection celestial coordinate teaching aid is mainly formed by combining a base (1), a rotary drum (2) arranged on the base (1) and a laser (3) arranged at the top end of the rotary drum (2). The laser projection celestial coordinate teaching aid provided by the utility model is clear and three-dimensional in effect, and can be observed by all learners in a classroom only by one product; projected patterns conform to actual conditions of celestial coordinates, a first-person visual angle can be brought to a user, and demonstration of teaching contents such as a horizon coordinate system, a first equatorial coordinate system, a second equatorial coordinate system and an ecliptic coordinate system can be well completed.

Description

Technical Field

[0001] The utility model relates to the field of astronomy / geography teaching tools, in particular to a laser projection celestial sphere coordinate teaching tool. Background Art

[0002] At present, in the teaching of astronomy / geography, especially in the teaching activities of astronomy / geography related majors in colleges and universities, the teaching of celestial coordinates is the focus and difficulty of teaching. It is necessary to help learners establish a complete spatial thinking and spatial cognition, and clarify the base circle, initial circle, auxiliary circle, origin and measurement methods of various celestial coordinate systems. Due to the design of a three-dimensional spatial coordinate system, a teaching tool that can use laser projection to conduct celestial coordinates is needed.

[0003] However, most of the existing celestial coordinate teaching tools do not give learners a strong sense of space. They can often only display the spatial position of celestial coordinates from a third-person perspective, which is inconsistent with the actual situation of celestial coordinates. They cannot better display the spatial position and dynamic changes of the main celestial coordinates from the first-person perspective of the observer, which affects the teaching effect. Utility Model Content

[0004] The purpose of the utility model is to provide a laser projection celestial coordinate teaching tool, which solves the problem of blankness of similar astronomy / geography teaching tools.

[0005] The utility model is realized in this way. It is a laser projection celestial coordinate teaching tool. The laser projection celestial coordinate teaching tool mainly consists of a base, a rotating drum arranged on the base and a laser arranged on the top of the rotating drum.

[0006] A further technical solution of the utility model is that the rotating drum is connected to the base rotating shaft through a rotating drum seat.

[0007] A further technical solution of the utility model is: the laser is connected to the top of the rotating drum through a universal joint at the bottom.

[0008] A further technical solution of the utility model is that: the laser is provided with a base ring light emitter, an initial ring light emitter and an auxiliary ring light emitter.

[0009] A further technical solution of the utility model is that the base ring light emitter is arranged horizontally.

[0010] A further technical solution of the utility model is that the initial circle light emitter is arranged vertically.

[0011] A further technical solution of the utility model is that the auxiliary circle light emitters are vertically arranged and perpendicular to the initial circle light emitters.

[0012] The beneficial effects of the utility model: the laser projection celestial coordinate teaching tool of the utility model has clear and three-dimensional effect, and only one product is needed for all learners in the classroom to observe; the projected pattern is consistent with the actual situation of the celestial coordinates, and can bring a first-person intuitive perspective to the user, and can better complete the demonstration of teaching contents such as the horizontal coordinate system, the first equatorial coordinate system, the second equatorial coordinate system and the ecliptic coordinate system. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the overall structure of a laser projection celestial coordinate teaching tool provided by the utility model;

[0014] Figure 2 The utility model provides a real scene effect diagram of a laser projection celestial coordinate teaching tool. DETAILED DESCRIPTION

[0015] The following is an explanation of the implementation of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0016] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of the present specification are only used to match the contents disclosed in the specification for people familiar with the technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present utility model, so they have no substantial technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the present utility model, should still fall within the scope of the technical contents disclosed by the present utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in the present specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present utility model. The change or adjustment of the relative relationship, without substantial change of the technical contents, should also be regarded as the scope of the implementation of the present utility model.

[0017] Embodiment 1: Figure 1A laser projection celestial coordinate teaching tool is shown, which is mainly composed of: a base 1, a rotating cylinder 2 arranged on the base 1 and a laser 3 arranged on the top of the rotating cylinder 2; the rotating cylinder 2 is connected to the rotating shaft of the base 1 through a rotating cylinder seat 21; the laser 3 is connected to the top of the rotating cylinder 2 through a universal joint 4 at the bottom; a base circle light emitter 31, an initial circle light emitter 32 and an auxiliary circle light emitter 33 are provided on the laser 3; the base circle light emitter 31 is arranged horizontally; the initial circle light emitter 32 is arranged vertically; the auxiliary circle light emitter 33 is arranged vertically and is perpendicular to the initial circle light emitter 32; the laser projection celestial coordinate teaching tool of the utility model has a clear and three-dimensional effect, and only one product is needed for all learners in the classroom to observe; the projected pattern is consistent with the actual situation of the celestial coordinates, can bring a first-person intuitive perspective to the user, and can better complete the demonstration of teaching contents such as the horizontal coordinate system, the first equatorial coordinate system, the second equatorial coordinate system and the ecliptic coordinate system.

[0018] Note: When demonstrating different coordinate systems, the projection of the base circle light emitter is always the base circle of the coordinate system, the projection of the initial circle coordinate system is always the great circle where the initial circle of the coordinate system is located, and the projection of the auxiliary circle coordinate system is always one of the important auxiliary circles of the coordinate system. The three are always perpendicular to each other, but they are deflected and rotated relative to the room.

[0019] Laser lines are generated through laser technology, and 12 laser lines can be emitted simultaneously to create reference lines in the surrounding environment.

[0020] The laser level mainly includes the following key components:

[0021] Laser diode: The laser diode in the level produces a laser beam with a laser class of 2 and a power of less than 1mW, emitting low-power visible light. It will not cause damage to the eyes under normal conditions. The laser emission is powered by a removable rechargeable battery.

[0022] Optical components: including outer protective plane mirrors and inner lenses and multi-faceted reflectors. The former protects the optical components and is easy to clean; the latter is used to shape and guide the laser beam. Among them, the lens focuses the laser diode beam into finer lines to increase projection clarity; the multi-faceted reflector can divide a beam of light into four parts and change the direction of the laser, so that a 360° laser closed loop can be projected with only one light source, saving costs and installation space for light-emitting equipment.

[0023] Rotation mechanism: Some laser levels use a dual rotating head device, so that the light-emitting and projection equipment part that emits multiple laser beams can rotate around the center. The internal rotation axis can be at a certain angle with the plane where the equipment is placed. The angle can be adjusted within the range of 0-90°. The adjustable part has an angle indicator sticker, which can roughly reflect the inclination of the rotation axis, and is used to simulate the inclination and rotation of the equatorial coordinate system in different geographical dimensions. The secondary rotation device is a universal head principle that can separate the deflection axis of the laser generator from the rotation axis. See the schematic diagram on the last page for details. It has any secondary deflection direction and a maximum deflection angle of 23°26′, which is used to simulate the rotation of the ecliptic on the celestial sphere, the change of the ecliptic obliquity, and the consequences of the precession of the earth's axis.

[0024] Control system: Users can control individual light-emitting diodes separately and set the device to emit laser lines in different directions and quantities to separately demonstrate the base circle, the great circle where the initial circle is located, or the important auxiliary circles of different celestial coordinate systems.

[0025] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A laser projection celestial coordinate teaching tool, characterized in that: The laser projection celestial coordinate teaching tool is mainly composed of: a base (1), a rotating cylinder (2) arranged on the base (1), and a laser (3) arranged on the top of the rotating cylinder (2).

2. The laser projection celestial coordinate teaching tool according to claim 1, characterized in that: The rotating drum (2) is connected to the rotating shaft of the base (1) via a rotating drum seat (21).

3. The laser projection celestial coordinate teaching tool according to claim 1, characterized in that: The laser (3) is connected to the top end of the rotating drum (2) via a universal joint (4) at the bottom end.

4. The laser projection celestial coordinate teaching tool according to claim 1, characterized in that: The laser (3) is provided with a base ring light emitter (31), a primary ring light emitter (32) and an auxiliary ring light emitter (33).

5. The laser projection celestial coordinate teaching tool according to claim 4, characterized in that: The base ring light emitter (31) is arranged horizontally.

6. The laser projection celestial coordinate teaching tool according to claim 5, characterized in that: The initial light emitter (32) is arranged vertically.

7. The laser projection celestial coordinate teaching tool according to claim 5, characterized in that: The auxiliary circle light emitter (33) is vertically arranged and perpendicular to the initial circle light emitter (32).

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