Novel sextant convenient to operate

Abstract

The utility model discloses a novel sextant convenient to operate, which relates to the technical field of sextants and comprises a sextant body and a handheld holder structure. The sextant body comprises a mounting frame, and the mounting frame is fixed to the side edge of the top of the handheld holder structure through a connecting piece; a corner sensor is arranged at the top of the back of the sextant body; the handheld holder structure comprises a handle barrel, a telescopic column is sleeved with the handle barrel, a rotary table is arranged at the top end of the telescopic column, a microcomputer panel is arranged above the rotary table, an attitude sensor is arranged at the top of the microcomputer panel, and a connecting piece is arranged on the side edge of the rotary table. The microcomputer panel is electrically connected with the rotation angle sensor and the attitude sensor respectively; the rotation angle sensor is used for acquiring the deflection angle of the sextant body; the attitude sensor is used for acquiring the levelness and perpendicularity of the handheld holder structure; and the microcomputer panel is used for displaying the deflection angle, the levelness and the perpendicularity. According to the utility model, the technical problem of poor detection data precision during handheld measurement in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of sextants, in particular to a novel sextant which is easy to operate. Background Art

[0002] A sextant is an optical instrument used to measure the angle between two distant targets. It is usually used to measure the angle between the sun or other celestial bodies and the sea level or horizon at a certain moment, so as to quickly know the longitude and latitude of the location of a ship or aircraft. Therefore, it is commonly used in astronomical navigation measurements.

[0003] In conjunction with the easy-to-operate sextant disclosed in the utility model patent of the reference document (Chinese Patent Publication No. CN205607373U), the sextant structure of this utility model patent is constructed by fixing the sextant body to the inner side of a spherical groove of a mounting shell, and then rotatably mounting the mounting shell to the inner side of a bracket structure. This ensures that when the bracket is shaken by external forces, the mounting shell automatically rotates along its transverse and longitudinal axes to keep the top plane parallel to the horizon or sea level, thereby maintaining horizontal stability of the sextant's measurement plane. However, in conjunction with the mounting shell and bracket structure of this sextant, it can be seen that the mounting shell uses gravity to keep the sextant's measurement plane always parallel to the horizon or sea level. However, in actual use, due to the movement of the ship caused by surging waves during sea voyages, the rotatably connected mounting shell and bracket are always in a state of relative shaking. In this case, the sextant structure and the mounting shell will shake at the same frequency, which will prevent normal data measurement. In addition, the bracket structure is large and has certain inconveniences when held in hand. Utility Model Content

[0004] The purpose of the present invention is to provide a novel sextant that is easy to operate in order to solve at least one of the above technical problems.

[0005] In the first aspect, an embodiment of the utility model provides a new sextant that is easy to operate, comprising: a sextant body and a handheld pan-tilt structure; the sextant body comprises a mounting bracket, which is fixed to the top side position of the handheld pan-tilt structure through a connecting piece; an angle sensor is arranged on the top back of the sextant body; the handheld pan-tilt structure comprises a handle tube, a telescopic column is sleeved inside the handle tube, a turntable is arranged on the top of the telescopic column, a microcomputer panel is arranged above the turntable, a posture sensor is arranged on the top of the microcomputer panel, and the connecting piece is arranged on the side of the turntable; the microcomputer panel is electrically connected to the angle sensor and the posture sensor respectively; the angle sensor is used to obtain the deflection angle of the sextant body; the posture sensor is used to obtain the horizontality and verticality of the handheld pan-tilt structure; the microcomputer panel is used to display the deflection angle, the horizontality and the verticality.

[0006] Furthermore, the sextant body also includes: a dial, an optical telescope, a swing arm sleeve, an indicator movable mirror, a horizon mirror and a lens; wherein, the dial is arranged at the bottom position of the front side of the mounting frame, the optical telescope and the horizon mirror are respectively arranged at the two side edges of the front side of the mounting frame, and the lens is arranged at the front side of the mounting frame near the horizon mirror; the top of the mounting frame is rotatably connected to a rotating shaft, the inner side of the rotating shaft is fixedly connected to the swing arm sleeve, and the indicator movable mirror is fixed to the front side of the rotating shaft; the swing arm sleeve slides on the outer side of the dial.

[0007] Furthermore, the scale plate is an arc-shaped structure with an arc of 120 degrees, and angle scales are set on the surface of the arc-shaped structure.

[0008] Furthermore, the number of the lenses is two.

[0009] Furthermore, the handheld gimbal structure also includes a threaded screw, which is arranged through the interior of the handle barrel and the telescopic column; wherein, the bottom of the threaded screw is fixed to the lower internal position of the handle barrel, and a rotary wheel is arranged through the bottom side wall of the handle barrel, and the end of the rotary wheel is engaged with the bottom end of the threaded screw through a bevel gear; a slip ring is provided at the bottom of the telescopic column, an external thread is provided on the threaded screw, and an internal thread matching the external thread is provided on the inner wall of the slip ring, and the upper part of the threaded screw passes through the slip ring and is deeply arranged inside the telescopic column.

[0010] Furthermore, a height scale is provided on the side wall of the telescopic column.

[0011] Furthermore, the handheld gimbal structure also includes a micro reduction motor, which is arranged on the top outer wall of the telescopic column; a driving gear is provided at the top of the micro reduction motor, and a driven gear is provided at the bottom of the turntable, the driving gear is engaged with the driven gear, and the bottom of the turntable is rotatably connected to the top of the telescopic column.

[0012] Furthermore, the back surface of the mounting bracket is connected to the front surface of the connector via a card clip connection.

[0013] Furthermore, the mounting bracket and the connecting member are fixedly connected by fixing bolts.

[0014] The utility model provides a novel sextant that is easy to operate. The sextant body can be conveniently taken out by holding the operating handle. The verticality and horizontality of the sextant body and the observed sea level are detected by the attitude sensor, thereby ensuring the correct holding posture of the handle. At the same time, the current longitude and latitude data can be accurately measured in conjunction with the angle sensor, thereby improving the stability when holding the device and the accuracy of the detection data, and alleviating the technical problem of poor detection data accuracy during handheld measurement in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the implementation methods of the present application or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the specific implementation methods or the description of the prior art. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0016] Figure 1 A schematic diagram of the overall structure of a novel sextant that is easy to operate provided by an embodiment of the utility model;

[0017] Figure 2 A schematic diagram of a handheld gimbal structure provided by an embodiment of the present invention;

[0018] Figure 3 A front view of a sextant body provided by an embodiment of the present utility model;

[0019] Figure 4 A front view of a scale plate provided in an embodiment of the present utility model;

[0020] Figure 5 A perspective view of a handheld gimbal structure provided by an embodiment of the present utility model;

[0021] Figure 6 A schematic diagram of the connection between a mounting bracket and a connecting piece provided in an embodiment of the present utility model.

[0022] In the figure: 1. Sextant body, 101. Mounting frame, 102. Dial, 103. Optical telescope, 104. Swing arm sleeve, 105. Index moving mirror, 106. Horizon mirror, 107. Lens, 2. Handheld pan / tilt structure, 201. Handle tube, 202. Telescopic column, 203. Threaded screw, 204. Micro reduction motor, 205. Turntable, 206. Connector, 207. Microcomputer panel, 208. Attitude sensor, 209. Rotating wheel, 210. Slip ring, 3. Angle sensor. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] Figure 1This is a schematic diagram of the overall structure of a new sextant that is easy to operate according to an embodiment of the present invention. Figure 1 As shown, it includes: a sextant body 1 and a handheld pan-tilt structure 2; the sextant body 1 includes a mounting bracket 101, which is fixed to the top side of the handheld pan-tilt structure 2 through a connecting piece 206; a rotation angle sensor 3 is set on the top back of the sextant body 1.

[0025] Figure 2 This is a schematic diagram of a handheld gimbal structure provided according to an embodiment of the present invention. Figure 2 As shown, the handheld gimbal structure 2 includes a handle tube 201, a telescopic column 202 is sleeved inside the handle tube 201, a turntable 205 is set at the top of the telescopic column 202, a microcomputer panel 207 is set above the turntable 205, a posture sensor 208 is set on the top of the microcomputer panel 207, and a connecting piece 206 is set on the side of the turntable 205; the microcomputer panel 207 is electrically connected to the angle sensor 3 and the posture sensor 208 respectively.

[0026] Specifically, the rotation angle sensor 3 is used to obtain the deflection angle of the sextant body 1;

[0027] The attitude sensor 208 is used to obtain the horizontality and verticality of the handheld gimbal structure 2;

[0028] The microcomputer panel 207 is used to display the deflection angle, horizontality and verticality.

[0029] Figure 3 This is a front view of a sextant body provided according to an embodiment of the present utility model. Figure 3 As shown, the sextant body 1 also includes: a dial 102, an optical telescope 103, a swing arm sleeve 104, an index moving mirror 105, a horizon mirror 106 and a lens 107; wherein, the dial 102 is arranged at the bottom position of the front side of the mounting frame 101, the optical telescope 103 and the horizon mirror 106 are respectively arranged at the two side edges of the front side of the mounting frame 101, and the lens 107 is arranged at the front side of the mounting frame 101 near the horizon mirror 106.

[0030] The top of the mounting frame 101 is rotatably connected to a rotating shaft. A swing arm sleeve 104 is fixedly connected to the inner side of the rotating shaft. A moving index mirror 105 is fixed to the front of the rotating shaft. The swing arm sleeve 104 slides on the outer side of the scale plate 102. By sliding the swing arm sleeve 104 on the scale plate 102, the angle of light reflected by the moving index mirror 105 can be adjusted. The light passes through the lens 107, is reflected by the horizon mirror 106, and is received by the observation lens of the optical telescope 103.

[0031] Preferably, if Figure 3 As shown, the number of lenses 107 is two.

[0032] Figure 4 This is a front view of a scale plate provided according to an embodiment of the present utility model. Figure 4 As shown, the scale plate 102 is an arc-shaped structure with an arc of 120 degrees, and angle scales are set on the surface of the arc-shaped structure.

[0033] Figure 5 This is a perspective view of a handheld gimbal structure provided according to an embodiment of the present invention. Figure 5 As shown, the handheld gimbal structure 2 also includes a threaded screw 203, which is arranged through the interior of the handle 201 and the telescopic column 202; wherein, the bottom of the threaded screw 203 is fixed to the lower internal position of the handle 201, and a rotary wheel 209 is arranged through the bottom side wall of the handle 201, and the end of the rotary wheel 209 is engaged with the bottom end of the threaded screw 203 through a bevel gear; a slip ring 210 is arranged at the bottom of the telescopic column 202, an external thread is arranged on the threaded screw 203, and an internal thread matching the external thread is arranged on the inner wall of the slip ring 210, and the upper part of the threaded screw 203 passes through the slip ring 210 and is deeply arranged inside the telescopic column 202.

[0034] Specifically, the rotary wheel 209 is rotated, and the bevel gear at the end of the rotary wheel 209 drives the bevel gear at the bottom end of the screw rod 203 to rotate, thereby driving the screw rod 203 to rotate, and by driving the slip ring 210 to slide up and down, the extension height of the telescopic column 202 is adjusted.

[0035] Preferably, if Figure 2 As shown, a height scale is provided on the side wall of the telescopic column 202 to facilitate determination of the observation height.

[0036] Specifically, such as Figure 2 As shown, the handheld gimbal structure 2 further includes a micro-reduction motor 204, which is mounted on the top outer wall of the telescopic column 202. A driving gear is disposed at the top of the micro-reduction motor 204, and a driven gear is disposed at the bottom of the turntable 205. The driving gear and the driven gear mesh with each other, and the bottom of the turntable 205 is rotatably connected to the top of the telescopic column 202. Specifically, the micro-reduction motor 204 drives the turntable 205 to rotate by meshing the main gear with the driven gear.

[0037] In an optional implementation provided by an embodiment of the present invention, the diameter of the driven gear at the bottom of the turntable 205 is three times the diameter of the driving gear on the micro reduction motor 204. The micro reduction motor 204 can rotate the turntable 205 at a constant speed to adjust the observation orientation of the sextant body 1.

[0038] Figure 6 This is a schematic diagram of the connection between a mounting bracket and a connecting piece provided according to an embodiment of the present utility model. Figure 6As shown, the back of the mounting frame 101 is connected to the front of the connecting member 206 by a card clip; the mounting frame 101 and the connecting member 206 are also fixedly connected by fixing bolts. This design facilitates the disassembly and installation between the sextant body 1 and the handheld pan-tilt structure 2.

[0039] The embodiment of the present utility model provides a new sextant that is easy to operate. The working principle is as follows: by loosening the limit bolt and moving the swing arm sleeve 104, the swing arm sleeve 104 slides along the outer side of the dial 102, thereby changing the light reflection angle of the index movable mirror 105 connected to the rotating shaft, so that the light passes through the two lenses 107 and is reflected by the horizon mirror 106, and then receives the solar image through the observation lens of the optical telescope 103. The image processor inside the optical telescope 103 transmits the detection signal to the signal processor of the microcomputer panel 207, cooperates with the detection axis of the angle sensor 3 to measure the deflection change angle of the swing arm sleeve 104, and transmits the measurement data signal to the signal processor, which is processed by the remote calculation amplification circuit to calculate the current longitude and latitude data.

[0040] When the handle 201 is held and the sextant body 1 does not maintain verticality and horizontality with the observed sea level, the posture sensor 208 is based on an inertial measurement unit and is composed of a gyroscope and an accelerometer structure. The gyroscope component can measure the angular velocity of the sextant body 1 rotating around the three axes x, y, and axis, while the accelerometer can measure the acceleration of the sextant body 1 along the three axes. By processing the measurement results of the gyroscope and accelerometer, the holding posture of the sextant body 1 can be determined, and the detection data can be transmitted to the signal processor and displayed on the display screen, so as to facilitate adjustment to keep it vertical and horizontal with the observed sea level.

[0041] As can be seen from the above description, the embodiment of the utility model provides a new sextant that is easy to operate. The mounting frame of the sextant body is connected and fixed to the connecting piece by a card and a fixing bolt. The sextant body can be conveniently taken out by holding the operating handle. At this time, the gyroscope and accelerometer components inside the attitude sensor detect the verticality and horizontality of the sextant body and the observation sea level, thereby ensuring the correct holding posture of the handle. At the same time, the limit bolt rod is loosened to rotate the swing arm sleeve, thereby changing the light of the index moving mirror and the horizon mirror and the incident angle to the optical telescope, and coordinating with the rotation amplitude of the angle sensor to accurately measure the current longitude and latitude data, thereby improving the stability when holding and the accuracy of the detection data.

[0042] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0043] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A novel sextant that is easy to operate, characterized in that: include: A sextant body and a handheld gimbal structure; the sextant body includes a mounting bracket, which is fixed to the top side of the handheld gimbal structure via a connector; a rotation angle sensor is provided on the top back of the sextant body; The handheld gimbal structure includes a handle tube, a telescopic column is sleeved inside the handle tube, a turntable is provided on the top of the telescopic column, a microcomputer panel is provided above the turntable, a posture sensor is provided on the top of the microcomputer panel, and the connecting piece is provided on the side of the turntable; the microcomputer panel is electrically connected to the rotation angle sensor and the posture sensor respectively; The rotation angle sensor is used to obtain the deflection angle of the sextant body; The attitude sensor is used to obtain the horizontality and verticality of the handheld gimbal structure; The microcomputer panel is used to display the deflection angle, the horizontality and the verticality.

2. The novel sextant according to claim 1, characterized in that: The sextant body further comprises: a scale plate, an optical telescope, a swing arm sleeve, an index moving mirror, a horizon mirror, and a lens; wherein the scale plate is disposed at the bottom of the front face of the mounting frame, the optical telescope and the horizon mirror are respectively disposed at the two side edges of the front face of the mounting frame, and the lens is disposed at the front face of the mounting frame near the horizon mirror; The top of the mounting frame is rotatably connected to a rotating shaft, the inner side of the rotating shaft is fixedly connected to the swing arm shaft sleeve, and the indicator moving mirror is fixed on the front side of the rotating shaft; the swing arm shaft sleeve slides on the outer side of the dial.

3. The novel sextant according to claim 2, characterized in that: The scale plate is an arc-shaped structure with an arc of 120 degrees, and angle scales are set on the surface of the arc-shaped structure.

4. The novel sextant that is easy to operate according to claim 2 is characterized in that: The number of the lenses is two.

5. The novel sextant that is easy to operate according to claim 1 is characterized in that: The handheld gimbal structure further includes a threaded screw, which is arranged to penetrate the interior of the handle tube and the telescopic column; wherein, The bottom of the threaded screw is fixed to the lower inner position of the handle, and a rotary wheel is provided through the bottom side wall of the handle, and the end of the rotary wheel is engaged with the bottom end of the threaded screw through a bevel gear; A slip ring is provided at the bottom of the telescopic column, an external thread is provided on the threaded screw, an internal thread matching the external thread is provided on the inner wall of the slip ring, and the upper part of the threaded screw passes through the slip ring and is deeply arranged inside the telescopic column.

6. The novel sextant that is easy to operate according to claim 1 is characterized in that: A height scale is provided on the side wall of the telescopic column.

7. The novel sextant according to claim 1, characterized in that: The handheld gimbal structure also includes a micro reduction motor, which is arranged on the top outer wall of the telescopic column; a driving gear is provided at the top of the micro reduction motor, and a driven gear is provided at the bottom of the turntable, the driving gear is meshed with the driven gear, and the bottom of the turntable is rotatably connected to the top of the telescopic column.

8. The novel sextant that is easy to operate according to claim 1 is characterized in that: The back side of the mounting frame is connected to the front side of the connector via a card clip.

9. The novel sextant that is easy to operate according to claim 1 is characterized in that: The mounting bracket and the connecting member are further fixedly connected by fixing bolts.

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