Satellite positioning receiver with photography coding mark

Abstract

The utility model discloses a satellite positioning receiver with a photographic coding mark, which comprises a receiver shell, a coding target plate is connected above the receiver shell through a hook and loop fastener, the hook and loop fastener comprises an A surface belt and a B surface belt which are detachably adhered, the A surface belt is arranged on the upper surface of the receiver shell, and the B surface belt is arranged on the lower surface of the receiver shell. The B surface belt is arranged on the lower surface of the coding target plate; the receiver housing is also provided with a positioning member, and the positioning member is connected with the coding target plate, so that the coding target plate and the receiver housing are coaxially arranged. According to the satellite positioning receiver, the encoding target plate is arranged on the shell of the satellite positioning receiver, the advantages of the encoding target plate and the satellite positioning receiver can be complementary, the position of the center of the satellite positioning (GNSS) receiver can be recognized during photogrammetry and photo splicing, coordinates of the center of the GNSS receiver can be obtained, and the satellite positioning receiver is simple in overall structure and convenient to implement.

Description

Technical Field

[0001] The utility model relates to the technical field of surveying and mapping equipment, and particularly relates to a satellite positioning receiver with a photographic coding mark. Background Art

[0002] A satellite positioning receiver is a device used to receive, track, process, and measure signals of the Global Navigation Satellite System, such as the commonly used Beidou / GNSS receiver. Its main functions include receiving satellite signals, extracting navigation messages and pseudorange measurements, processing navigation messages, and calculating positioning results. The working principle of the Beidou / GNSS receiver is based on the method of measuring pseudorange and carrier phase. By receiving and processing satellite signals, the distance and angle information between the receiver and the satellite are calculated, and then the position and speed of the receiver are determined. Its core components include an antenna, a receiving unit, and a processing unit. The antenna is responsible for receiving satellite signals, the receiving unit is responsible for extracting and processing signals, and the processing unit is responsible for data processing and calculation. The Beidou / GNSS receiver is an important navigation and positioning device, which is widely used in navigation, positioning, surveying, aviation, navigation, remote sensing and other fields.

[0003] When the satellite positioning receiver is used in the surveying and mapping field, it needs to be used in conjunction with coding marks. Coding marks are an indispensable part of photogrammetry. Each coding mark corresponds to a different unique code value, making it of important application value in image recognition. In the prior art, coding marks are mostly connected by pasting. If magnetic adsorption is possible, magnetic adsorption is used; if magnetic adsorption is not possible, adhesive is used for pasting. Both of these connection methods have certain limitations, and it is difficult for directly adsorbed coding marks to be aligned with the center position of the receiver. Summary of the Invention

[0004] The purpose of the utility model is to provide a satellite positioning receiver with a photographic coding mark for the problems existing in the prior art.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A satellite positioning receiver with a photographic coding mark includes a receiver housing. Above the receiver housing, a coding target board is connected through a hook-and-loop fastener. The hook-and-loop fastener includes a detachable A surface and a B surface. The A surface is arranged on the upper surface of the receiver housing, and the B surface is arranged on the lower surface of the coding target board. A positioning member is also provided on the receiver housing, and the positioning member is connected to the coding target board to arrange the coding target board and the receiver housing coaxially.

[0007] By setting the coded target board on the housing of this satellite positioning receiver, the advantages of both can be complementary, enabling the position of the center of the satellite positioning (GNSS) receiver to be identified during photogrammetry and photo splicing, and the coordinates of the center position of the GNSS receiver to be obtained. Moreover, the overall structure is simple and the implementation is convenient.

[0008] Using the velcro tape to connect the coded target board is simple and convenient for installation and easy to disassemble. The target board with different identifications can be replaced according to the required code, and it is installed on the satellite positioning receiver through the velcro tape. The center of the coded target board needs to be aligned with the center of the satellite positioning receiver, and then the satellite positioning receiver is installed on the tripod to carry out relevant measurement work.

[0009] The positioning part is set at the center position of the receiver housing. Using the positioning part to position the coded target board can ensure that the two are concentric, which is beneficial to the consistency of the center coordinates.

[0010] Furthermore, the orthographic projection of the upper surface of the receiver housing is circular, the coded target board is a circular board, and the upper surface of the coded target board is provided with coded identifications.

[0011] Furthermore, the velcro tape is an annular tape, and the width of the velcro tape is not less than 10 mm; the A side tape and the B side tape are respectively fixed on the receiver housing and the coded target board through strong glue, so that they can be relatively firmly fixed on the objects in use.

[0012] Furthermore, the positioning part includes a positioning protrusion arranged at the center of the receiver housing, and the positioning protrusion is provided with a spherical end; a positioning hole is provided at the center of the back of the coded target board, and the positioning hole is connected to and accommodates the spherical end.

[0013] Or, the positioning part includes a positioning post arranged at the center of the receiver housing, and at least a pair of elastic petals are provided on the positioning post, and arc-shaped protrusions are provided on the outer sides of the ends of the elastic petals; a central through hole is provided in the middle of the coded target board, and the elastic petals pass through the central through hole and are limited by the arc-shaped protrusions.

[0014] Furthermore, the thickness of the coded target board is 3 - 15 mm, and different positioning and connection methods can be selected for coded target boards with different thicknesses.

[0015] Furthermore, the upper surface of the receiver housing is a plane or a curved surface that bulges upward. The receiver housing is also provided with a power interface, a transmission interface, an antenna interface, a card slot and a display screen. A connecting seat is provided below the receiver housing for connecting to a tripod.

[0016] In some embodiments, an annular support platform is further provided on the back surface of the encoded target board. The lower surface of the annular support platform is an arc surface or an inclined surface and is connected to the B surface belt.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows: 1. By providing the encoded target board on the housing of the satellite positioning receiver, the advantages of the two can be complementary, enabling the position of the center of the satellite positioning receiver to be identified during photogrammetry and photo splicing, and the coordinates of the center position of the satellite positioning receiver can be obtained. Moreover, the overall structure is simple and easy to implement.

[0018] 2. The encoded target board is connected by using the hook and loop fastener, which is simple and convenient to install and easy to disassemble. The target board with different identifiers can be replaced according to the required code. Moreover, the hook and loop fastener has a longer repeated service life, and the two can be torn frequently without easy failure.

[0019] 3. The positioning member is arranged at the center position of the receiver housing, and the encoded target board is positioned by using the positioning member, which can ensure the concentricity of the two and is beneficial to the consistency of the center coordinates. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of the overall structure of a satellite positioning receiver with a photographic coding mark according to the present utility model;

[0021] Figure 2 is a front view of a satellite positioning receiver with a photographic coding mark according to the present utility model;

[0022] Figure 3 is a schematic diagram of the upper surface of the satellite positioning receiver according to the present utility model;

[0023] Figure 4 is a schematic diagram of the bottom surface of the encoded target board according to the present utility model;

[0024] Figure 5 is a schematic diagram of another positioning method of the encoded target board according to the present utility model;

[0025] Figure 6 is Figure 5 a schematic enlarged sectional view at A in;

[0026] Figure 7 is a schematic diagram of another connection method of the encoded target board according to the present utility model;

[0027] In the figure: 1. Receiver housing; 2. Encoded target board; 3. Hook and loop fastener; 301. A surface belt; 302. B surface belt; 4. Positioning protrusion; 5. Positioning hole; 6. Positioning column; 7. Elastic flap; 8. Arc protrusion; 9. Central through hole; 10. Display screen; 11. Connection seat; 12. Annular support platform. Detailed implementation mode

[0028] The technical solutions of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work conditions belong to the protection scope of the present utility model.

[0029] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "middle", "upper", "lower", "left", "right", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Embodiment 1

[0030] As Figures 1 to 4 shown, a satellite positioning receiver with a photographic coding mark includes a receiver housing 1, and a coding target board 2 is connected above the receiver housing 1 through a hook-and-loop fastener 3. The hook-and-loop fastener 3 includes a detachable and pasteable A surface 301 and a B surface 302. The A surface 301 is arranged on the upper surface of the receiver housing 1, and the B surface 302 is arranged on the lower surface of the coding target board 2; a positioning member is further provided on the receiver housing 1, and the positioning member is connected to the coding target board 2 so that the coding target board 2 and the receiver housing 1 are arranged coaxially.

[0031] By arranging the coding target board 2 on the housing of the satellite positioning receiver, the advantages of the two can be complementary, so that the position of the center of the satellite positioning (GNSS) receiver can be identified during photogrammetry and photo splicing, and the coordinates of the center position of the GNSS receiver can be obtained, and the overall structure is simple and the implementation is convenient.

[0032] In this embodiment, the coding target board 2 can be used as the surface feature points of the object to be measured, so as to improve the accuracy of camera calibration, feature point stereo matching, data splicing and three-dimensional reconstruction. At the same time, in cooperation with the satellite positioning receiver, accurate coordinate values can be obtained, which is beneficial to accurate positioning and measurement.

[0033] Using the hook-and-loop fastener 3 to connect the coded target board 2 is simple and convenient for installation and easy to disassemble. The target board with different markings can be replaced according to the required code. It is installed on the satellite positioning receiver through the hook-and-loop fastener. The center of the coded target board needs to be aligned with the center of the satellite positioning receiver, and then the satellite positioning receiver is installed on the tripod to carry out relevant measurement work.

[0034] The reason for using the hook-and-loop fastener 3 for connection is considered from the following aspects: First, the receiver housing is not necessarily made of metal. Even if it is made of metal, it is not necessarily made of ferromagnetic material. Therefore, the magnetic adsorption pasting method has great limitations. Second, using adhesives such as self-adhesive tape, the viscosity will decrease during frequent removal and replacement, and it will lose its viscosity after a few uses and need to reset the adhesive layer. If a stronger adhesive is used, it is not conducive to removing the coded target board without damage. Third, using connection methods such as screws will damage the structural integrity of the receiver housing, and tools are needed when screwing, which is not convenient.

[0035] The hook-and-loop fastener 3 can be Velcro. The A surface band 301 can be the fuzzy side, and the B surface band 302 can be the prickly side, or the two sides can be swapped. In this way, only the A surface band 301 and the B surface band 302 need to be fixed on the receiver housing 1 and the coded target board 2 respectively. They can be torn repeatedly between each other without easy failure. For Velcro with good quality, it can be torn repeatedly thousands of times or even tens of thousands of times.

[0036] The positioning part is arranged at the center position of the receiver housing 1. Using the positioning part to position the coded target board 2 can ensure that the two are concentric, which is beneficial to the consistency of the center coordinates. Since only the hook-and-loop fastener is used to connect the receiver housing and the coded target board, they cannot maintain concentricity between each other, and it is rather troublesome to judge manually. After setting the positioning part, the coded target board can be first connected to the positioning part during connection, and then the Velcro can be stuck tightly.

[0037] Furthermore, the orthographic projection of the upper surface of the receiver housing 1 is circular, the coded target board 2 is a circular board, and the upper surface of the coded target board 2 is provided with coded markings. The circular coded target board 2 has characteristics such as affine invariance, rotation and translation invariance, and easy recognition.

[0038] Further, the hook-and-loop fastener 3 is an annular belt, and the width of the hook-and-loop fastener 3 is not less than 10 mm, so that it has a certain bonding connection area and is not easily separated and detached by itself; the A surface belt 301 and the B surface belt 302 are respectively fixed on the receiver housing and the coded target board by strong glue. For the A surface belt 301 and the B surface belt 302, they can be relatively firmly fixed on the object to be used to ensure that they can be used for a long time, and their separation strength is much greater than the bonding strength between the A surface belt and the B surface belt.

[0039] In some embodiments, as Figure 2 shown, the positioning member includes a positioning protrusion 4 provided at the center of the receiver housing 1, and the positioning protrusion 4 is provided with a spherical end; a positioning hole 5 is provided at the center of the back surface of the coded target board 2, and the positioning hole 5 is connected to and accommodates the spherical end.

[0040] During installation and connection, just sleeved the positioning hole 5 on the coded target board over the spherical end; the positioning protrusion 4 can be a relatively small protrusion, the positioning hole 5 can be a shallow groove, and the size of the spherical end is slightly larger than the orifice size of the positioning hole, and it needs to be gently pressed and snapped in so that it can be felt during snap connection.

[0041] In other embodiments, as Figure 5 and Figure 6 shown, the positioning member includes a positioning post 6 provided at the center of the receiver housing 1, and at least a pair of elastic flaps 7 are provided on the positioning post 6, and an arc-shaped protrusion 8 is provided on the outer side of the end of the elastic flap 7; a central through hole 9 is provided in the middle of the coded target board 2, and the elastic flap 7 passes through the central through hole 9 and is limited by the arc-shaped protrusion 8.

[0042] A pair of the elastic flaps 7 can be closed, then pass through the central through hole 9. After the arc-shaped protrusion 8 emerges from the central through hole 9, the elastic flap 7 returns to its original position, so that the coded target board 2 is connected to the positioning post.

[0043] Further, the thickness of the coded target board 2 is 3 - 15 mm. For a relatively thin (such as less than 5 mm) coded target board, the second connection and positioning method described above is suitable; for a relatively thick coded target board, both of the above two connection methods are applicable.

[0044] Furthermore, the upper surface of the receiver housing 1 is a flat surface so as to directly use the hook-and-loop fastener 3 to connect the coded target board 2; a power interface, a transmission interface, an antenna interface, a card slot, a display screen 10, etc. are also provided on the receiver housing 1, and a connection seat 11 is provided below the receiver housing 1 for connecting a tripod. The satellite positioning receiver in this embodiment can be modified on an existing product, and the principle content of satellite positioning and measurement remains unchanged, only an improvement solution in terms of hardware is provided. Embodiment 2

[0045] This embodiment provides another connection method for the coded target board. As Figure 7 shown, when the upper surface of the receiver housing 1 is an upwardly convex arc surface, it is not convenient to directly use the hook-and-loop fastener for connection. Therefore, an annular support platform 12 is further provided on the back surface of the coded target board 2. The lower surface of the annular support platform 12 is an arc surface or an inclined surface, and is connected with the B surface tape 302.

[0046] The annular support platform 12 can form a certain support structure, so that the hook-and-loop fastener 3 can be arranged between the two. The annular support platform 12 can be a light structure such as a foam, a sponge or a foam block. The two ends of the annular support platform are respectively fixedly connected to the coded target board and the B surface tape through adhesives.

[0047] In some embodiments, if conditions permit, the coded target board 2 can also be set to be slightly arc-shaped to fit the receiver housing 1 with an arc-shaped upper surface. In this case, the annular support platform does not need to be provided.

[0048] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A satellite positioning receiver with a photographic coding mark, comprising a receiver housing, characterized in that: A coding target plate is connected to the top of the receiver housing via Velcro, and the Velcro includes a detachable A-side tape and a B-side tape, wherein the A-side tape is arranged on the upper surface of the receiver housing, and the B-side tape is arranged on the lower surface of the coding target plate; a positioning piece is also provided on the receiver housing, and the positioning piece is connected to the coding target plate so that the coding target plate and the receiver housing are arranged coaxially.

2. The satellite positioning receiver with photographic coding mark according to claim 1, characterized in that: The upper surface of the receiver housing is projected into a circle, the coding target plate is a circular plate, and a coding mark is provided on the upper surface of the coding target plate.

3. The satellite positioning receiver with photographic coding mark according to claim 1, characterized in that: The Velcro is an annular tape, and the width of the Velcro is not less than 10 mm; the A-surface tape and the B-surface tape are respectively fixed to the receiver housing and the coding target plate by strong glue.

4. The satellite positioning receiver with photographic coding mark according to claim 1, characterized in that: The positioning member comprises a positioning protrusion arranged at the center of the receiver housing, and the positioning protrusion is provided with a spherical end; a positioning hole is provided at the center of the back side of the coding target plate, and the positioning hole is connected to and accommodates the spherical end.

5. The satellite positioning receiver with photographic coding mark according to claim 1, characterized in that: The positioning member includes a positioning column arranged in the center of the receiver housing, and at least a pair of elastic petals are provided on the positioning column, and an arc-shaped protrusion is provided on the outer side of the end of the elastic petal; a central through hole is provided in the middle of the coding target plate, and the elastic petal passes through the central through hole and is limited by the arc-shaped protrusion.

6. The satellite positioning receiver with photographic coding mark according to claim 1, characterized in that: The thickness of the coding target plate is 3 to 15 mm.

7. The satellite positioning receiver with photographic coding mark according to claim 1, characterized in that: The upper surface of the receiver housing is a plane or an upwardly raised curved surface. The receiver housing is also provided with a power interface, a transmission interface, an antenna interface, a card slot and a display screen. A connecting seat is provided below the receiver housing for connecting a tripod.

8. The satellite positioning receiver with photographic coding mark according to claim 1, characterized in that: An annular support platform is also provided on the back of the coding target plate, and the lower surface of the annular support platform is an arc surface or an inclined surface and is connected to the B-surface belt.

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