CN215869819U - Antenna assembly, positioning base station and single base station positioning system - Google Patents
Antenna assembly, positioning base station and single base station positioning system Download PDFInfo
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- CN215869819U CN215869819U CN202121727185.8U CN202121727185U CN215869819U CN 215869819 U CN215869819 U CN 215869819U CN 202121727185 U CN202121727185 U CN 202121727185U CN 215869819 U CN215869819 U CN 215869819U
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Abstract
The utility model discloses an antenna assembly, a positioning base station and a single base station positioning system. The antenna assembly adopts a triangular antenna array, three signal needles are arranged on a substrate bearing an antenna sheet in an equilateral triangle shape, the three signal needles are positioned at three corner points of the equilateral triangle, the part of a needle body of each signal needle, which protrudes out of the antenna sheet, is a vibrator section, regular hexagons with equal side length, which are formed by taking the three corner points as centers, are mutually covered to form the outer contour of the antenna sheet, and the vertex of at least one corner point of the outer contour is positioned on the central line of the equilateral triangle. Through the arrangement, the antenna assembly provided by the utility model can accurately obtain the incident angles of the three signals through the three signal pins, so that the accurate angle direction of the tag can be calculated by using the single-base-station positioning system of the antenna assembly, and the accurate position of the tag in the current base station space can be positioned by the single base station by matching with the distance measurement distance of the positioning base station to the tag.
Description
Technical Field
The utility model relates to the technical field of indoor positioning, in particular to an antenna assembly, a positioning base station and a single base station positioning system.
Background
Among the numerous indoor positioning technologies, the bluetooth AOA (Angle Of Arrival positioning method) technology and the UWB (Ultra Wide Band) -AOA technology are currently popular and leading-edge technologies. Especially, the UWB indoor positioning technology develops better and better in the technical field of indoor positioning due to the advantages of high positioning precision, good multipath resistance effect, strong penetration capacity, low power spectrum density of transmitted signals, high safety and the like.
In a UWB positioning system, a common positioning method is that a single base station measures the distance to a tag, and a background resolves the position of the tag according to the ranging information of multiple base stations for the same tag, which is quite cumbersome and uneconomical in the actual application and implementation process. In order to solve the problem that a plurality of base stations are required to be erected to position in one space, the AOA single base station positioning technology is developed, and the existing single base station antenna design is not enough to meet the use requirement.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims to provide an antenna assembly, aiming at realizing single-base-station positioning and optimizing the positioning effect of a single-base-station antenna.
In order to achieve the above object, the antenna assembly provided by the present invention is used for receiving signals and transmitting the signals to a main controller, and includes a substrate, an antenna sheet and a signal pin, wherein the substrate is provided with at least three through holes, a connection line of central points of the three through holes is an equilateral triangle, a side length of the equilateral triangle is defined, and the range of the side length a is 5 mm to 50 mm;the antenna sheet is arranged on the surface of the substrate, the antenna sheet is provided with through holes corresponding to the through holes, regular hexagons with equal side length formed by the centers of the three through holes are mutually covered to form the outer contour of the antenna sheet, the vertex of at least one sharp corner of the outer contour is positioned on the central line of the equilateral triangle, the side length of the regular hexagons is defined as b, and the range of the side length b is
To 100 mm; the antenna comprises at least three signal pins, one signal pin is correspondingly inserted into one through hole and comprises a pin body and a receiving terminal, one end of the pin body is connected with the receiving terminal, the receiving terminal is fixed on the through hole, the part of the pin body, which protrudes out of the antenna sheet, is defined as a vibrator section, and the length value c of the vibrator section ranges from 3 millimeters to 50 millimeters.
Furthermore, a conducting layer is arranged on the wall of the through hole, a conducting ring is further arranged on the through hole, the conducting ring is arranged close to the hole opening of the antenna piece, and the conducting ring is electrically connected with the antenna piece and the conducting layer.
Further, the receiving terminal comprises a connecting portion and a wiring portion, the pin body is connected with the connecting portion, the connecting portion stretches into the through hole and is connected with the hole wall, the connecting portion deviates from the surface of the pin body and is connected with the wiring portion, and the wiring portion is electrically connected with the main controller.
Furthermore, the end face of the connecting part, which is provided with the oscillator section, is a plane, and when the connecting part extends into the through hole, the end face is flush with the surface of the antenna sheet.
Furthermore, the connecting portion comprises a connecting cylinder and a terminal medium, the connecting cylinder is a cylindrical cylinder with at least one open end and is made of conductive metal, the needle body extends into the connecting cylinder from one open end of the connecting cylinder, the terminal medium is contained in the connecting cylinder and wraps the needle body, and the other end of the connecting cylinder is fixed to the wiring portion.
Further, the conducting layer is a copper metal layer, and the connecting portion is connected to the through hole in a soldering mode.
Furthermore, a green oil ring layer is arranged on the surface, deviating from the substrate, of the antenna sheet, and the green oil ring layer surrounds the via holes respectively.
Further, the base plate was designed as a circular plate having a diameter of 120.87 mm and a thickness of 3.0 mm.
Optionally, the antenna sheet is a copper foil sheet with a thickness of 36 micrometers, the side length a is 25 millimeters, the side length b is 45.85 millimeters, and the length value c is 14 millimeters.
Optionally, the diameter of the signal pin is 1.29 mm, the aperture of the through hole is 6.22 mm, and the wiring portion adopts an SMA specification wiring lug.
The utility model provides a positioning base station, which comprises the antenna assembly.
The utility model also provides a single base station positioning system which comprises a positioning base station and a main controller, wherein the positioning base station is the positioning base station, and the positioning base station is electrically connected with the main controller.
The technical scheme of the utility model adopts a triangular antenna array, three signal needles are arranged on a substrate bearing an antenna sheet in an equilateral triangle shape, the side length of the equilateral triangle is a, and the equilateral triangle ranges from 5 mm to 50 mm. The three signal pins are positioned at three corner points of the equilateral triangle, the part of the pin body of the signal pin, which protrudes out of the antenna sheet, is a vibrator section, and the length value c of the vibrator section ranges from 3 mm to 50 mm. Regular hexagons with equal side length formed by taking three angular points as centers are mutually covered to form the outer contour of the antenna sheet, the vertex of at least one sharp corner of the outer contour is positioned on the central line of an equilateral triangle, the side length of the regular hexagons is b, and the range of the side length is
To 100 mm. Through the arrangement, the antenna assembly can accurately obtain the incident angles of the three signals through the three signal needles, so that the accurate angle direction of the label is calculated, and the base station is addedThe accurate position of the label in the current base station space can be positioned by the single base station according to the ranging distance of the label.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic diagram of an antenna assembly according to an embodiment of the present invention;
FIG. 2 is a schematic view of a substrate of the antenna assembly of FIG. 1 according to an embodiment
Fig. 3 is a schematic structural diagram of an antenna sheet of an embodiment of the antenna assembly of fig. 1;
FIG. 4 is a schematic diagram of a signal pin according to an embodiment of an antenna assembly of the present invention;
fig. 5 is a schematic structural diagram of another view angle of a signal pin of an embodiment of the antenna assembly in fig. 4.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 10 | |
33 | |
| 13 | Through |
331 | Connecting |
| 131 | Conducting |
3311 | Connecting |
| 20 | |
3313 | |
| 21 | Green |
333 | |
| 30 | Signal needle | a | Equilateral |
| 31 | Needle body | b | Side length of |
| 311 | Vibrator segment | c | Length value of oscillator segment |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
Referring to fig. 1 to 5, an antenna assembly 100 for receiving signals and transmitting the signals to a main controller according to the present invention includes a substrate 10, an antenna sheet 20 and a signal pin 30, wherein the substrate 10 has at least three through holes 13, a connection line of center points of the three through holes 13 is an equilateral triangle, a side length of the equilateral triangle is defined, and the range of the side length a is 5 mmTo 50 mm; the antenna sheet 20 is disposed on the surface of the substrate 10, the antenna sheet 20 is provided with via holes corresponding to the through holes 13, regular hexagons with equal side lengths formed by the centers of the three via holes are mutually covered to form an outer contour of the antenna sheet 20, the vertex of at least one sharp corner of the outer contour is located on the central line of an equilateral triangle, the side length of the regular hexagon is defined as b, and the range of the side length b is
To 100 mm; at least three signal pins 30, a signal pin 30 is correspondingly inserted into a through hole 13, the signal pin 30 includes a pin body 31 and a receiving terminal 33, one end of the pin body 31 is connected with the receiving terminal 33, the receiving terminal 33 is fixed in the through hole 13, the part of the pin body 31 protruding out of the antenna sheet 20 is defined as a vibrator section 311, and the length value c of the vibrator section 311 ranges from 3 mm to 50 mm.
In an embodiment of the present application, an antenna base station employs the antenna assembly 100 as described above, the positioning tag transmits a position signal from point E to point F of the antenna base station, and the antenna base station receives the position signal through the antenna assembly 100, assuming that the time of transmitting the position signal from point E to point F is T1The time T at which the signal arrives at point F and is received by the antenna assembly 1002The distance d between two points can be obtained by the following formula:
d＝(T2-T1)×c
wherein c is the speed of the electromagnetic wave propagating in the medium of the positioning space.
A spatial rectangular coordinate system is established by taking the plane of the antenna sheet 20 as a reference ground plane, the three signal pins 30 are named as a signal pin 30A, a signal pin 30B and a signal pin 30C, the signal pin 30A is taken as a center, the straight line where the connecting line of the signal pin 30A and the signal pin 30B is located is an x-axis, a y-axis perpendicular to the x-axis is located in the reference ground plane, and a coordinate system is established by passing through the z-axis of the signal pin 30A perpendicular to the reference ground plane. The signal pin 30A has a receiving function and a transmitting function, the signal pin 30B and the signal pin 30C have a receiving function, signals sent by the positioning tags are received by the three signal pins 30, the arrival angle data of the positioning tags in the positioning space can be obtained according to the arrival time difference algorithm, and the positioning system can determine the positions of the positioning tags in the positioning space relative to the positioning base station according to the geometric algorithm after knowing the arrival angle and the distance data.
Referring to fig. 1 to 3, in an embodiment of the present application, the antenna sheet 20 and the signal pin 30 are made of copper, and have good conductive capability and high performance-to-cost ratio. The outer contour of the antenna sheet 20 is determined by the outer contour line of the figure formed by overlapping three regular hexagons in the scheme, the signal needle 30 is positioned at the center of each regular hexagon, the design space utilization rate of the regular hexagons is high, the radiation environment around each signal needle 30 is perfectly symmetrical, the signals are uniform, the return loss is improved, and the positioning result is more accurate.
According to the technical scheme, the triangular antenna array is adopted, three signal needles 30 are arranged on the substrate 10 bearing the antenna sheet 20 in an equilateral triangle shape, the side length of the equilateral triangle is a, and the range is 5 mm to 50 mm. The three signal pins 30 are located at three corner points of the equilateral triangle, the part of the pin body 31 of the signal pin 30 protruding out of the antenna sheet 20 is a vibrator section 311, and the length value c of the vibrator section 311 ranges from 3 mm to 50 mm. Regular hexagons with equal side length formed by taking three corner points as centers are mutually covered to form the outer contour of the antenna sheet 20, the vertex of at least one sharp corner of the outer contour is positioned on the central line of an equilateral triangle, the side length of the regular hexagons is b, and the range of the side length of the regular hexagons is
To 100 mm, it is ensured that the regular hexagons can overlap each other to form the complete antenna patch 20. Through the setting, antenna module 100 accessible three signal needle 30 obtains the incident angle of three signal comparatively accurately to solve the angle direction of comparatively accurate label, including the range finding distance of base station to the label, can realize that single base station fixes a position out the accurate position of label in current base station space, for the location of the traditional many base stations that use, improve work efficiency and can save working cost.
Further, referring to fig. 2, a conductive layer is disposed on the wall of the through hole 13, the through hole 13 is further provided with a conductive ring, the conductive ring is disposed near the opening of the antenna patch 20, and the conductive ring is electrically connected to the antenna patch 20 and the conductive layer. The antenna sheet 20 is connected with the conductive layer of the hole wall through the conductive ring arranged at the hole opening to realize signal transmission.
Referring to fig. 4 and 5, in an embodiment of the present application, the receiving terminal 33 includes a connection portion 331 and a wire connection portion 333, the pin body 31 connects the connection portion 331, the connection portion 331 extends into the through hole 13 and is connected to the hole wall, a surface of the connection portion 331 facing away from the pin body 31 is connected to the wire connection portion 333, and the wire connection portion 333 is electrically connected to the main controller. The connecting portion 331 is used for extending into the through hole 13, connecting the signal pin 30 to the substrate 10, the pin body 31 is connected to the connecting portion 331, when the pin body 31 receives a signal, the signal is transmitted to the receiving portion through the connecting portion 331, and is transmitted to the main controller through the receiving portion.
Further, referring to fig. 5, the connecting portion 331 sets the end surface of the oscillator segment 311 to be flat, and when the connecting portion 331 extends into the through hole 13, the end surface is flush with the surface of the antenna sheet 20. The tail end of the oscillator section 311 is fixed to the connecting portion 331, when the mounting is completed, the connecting portion 331 extends into the through hole 13, the end face is flush with the surface of the antenna sheet 20 to ensure that the oscillator section 311 extends out of the antenna sheet 20 completely, and the reference is set to facilitate the structure of the antenna assembly 100 to be more accurate so as to obtain more accurate positioning information in a matching manner.
Referring to fig. 4 again, in an embodiment of the present application, the connecting portion 331 includes a connecting tube 3311 and a terminal medium 3313, the connecting tube 3311 is a cylindrical tube with at least one open end and is made of conductive metal, the pin 31 extends into the connecting tube 3311 from the open end of the connecting tube 3311, the terminal medium 3313 is accommodated in the connecting tube 3311 and surrounds the pin 31, and the other end of the connecting tube 3311 is fixed to the wire connecting portion 333. The connecting part 331 is a cylinder with the part connected with the hole wall conductive layer, and the outer diameter of the cylinder is slightly smaller than the inner diameter of the through hole 13, so that the connection stability and the signal transmission stability are ensured.
Further, referring to fig. 1, the conductive layer is a copper metal layer, and the connection portion 331 is soldered to the via hole 13. The surface of the antenna sheet 20 away from the substrate 10 is provided with a green oil ring layer, and the green oil ring layers are respectively arranged around the via holes. Copper metal level cooperation above-mentioned copper conducting ring and copper antenna piece 20 have better conducting capacity and have better uniformity, establish green oil circle layer around the via hole, prevent that tin liquid from flowing out and damaging antenna piece 20 when soldering tin, influencing structural performance.
In one embodiment of the present application, the base plate 10 is designed as a circular plate with a diameter of 120.87 mm and a thickness of 3.0 mm. The antenna sheet 20 is a copper foil with a thickness of 36 micrometers, the side length a is 25 millimeters, the side length b is 45.85 millimeters, the length value c is 14 millimeters, the substrate 10 is slightly larger than the antenna sheet 20, and the space utilization rate is good. The diameter of the signal pin 30 is 1.29 mm, the aperture of the through hole 13 is 6.22 mm, and the wiring part 333 adopts a wiring head with SMA specification. When the working frequency point is 4GHz, the signal pins 30 are respectively connected to a vector network analyzer, and the return loss values of three signal pins 30 can be obtained:
port 1 is-5.5547 dB; the port 2 is: -5.4902 dB; port 3 is: 5.0511 dB.
Therefore, the return loss values of the three ports are very close, the consistency is good, and the antenna structure basically meets the requirement on the performance of the antenna electric signals in a positioning system. In this embodiment, only the antenna structure has a better working state at a working frequency of 4GHz, and the effective working frequency range of the antenna structure is not limited thereto.
The present invention also provides a positioning base station, which includes an antenna assembly 100, and the specific structure of the antenna assembly 100 refers to the above-mentioned embodiments.
The utility model also provides a single base station positioning system, which comprises a positioning base station and a main controller, wherein the positioning base station is the positioning base station, the positioning base station is electrically connected with the main controller, and the spatial position is calculated by the antenna assembly 100 by adopting any one of the embodiments or other effective methods. Since the single base station positioning system adopts all the technical solutions of all the embodiments, at least all the beneficial effects brought by the technical solutions of the embodiments are achieved, and no further description is given here.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. An antenna assembly for receiving a signal and communicating the signal to a host controller, comprising:
the base plate is provided with at least three through holes, the connecting line of the central points of the three through holes is an equilateral triangle, the side length of the equilateral triangle is defined as a, and the range of the side length a is 5 mm to 50 mm;
the antenna sheet is arranged on the surface of the substrate, through holes are formed in the antenna sheet corresponding to the through holes, regular hexagons with equal side lengths formed by the centers of the three through holes are mutually covered to form an outer contour of the antenna sheet, the vertex of at least one sharp corner of the outer contour is positioned on the central line of the equilateral triangle, the side length of the regular hexagons is defined as b, and the range of the side length b is 3 a/3-100 mm; and
the antenna comprises at least three signal pins, one signal pin is correspondingly inserted into one through hole and comprises a pin body and a receiving terminal, one end of the pin body is connected with the receiving terminal, the receiving terminal is fixed on the through hole, the part of the pin body, which protrudes out of the antenna sheet, is defined as a vibrator section, and the length value c of the vibrator section ranges from 3 millimeters to 50 millimeters.
2. The antenna assembly of claim 1, wherein the wall of the through hole is provided with a conductive layer, the through hole further being provided with a conductive ring, the conductive ring being disposed proximate to the aperture of the antenna patch, the conductive ring electrically connecting the antenna patch and the conductive layer.
3. The antenna assembly of claim 2, wherein the receive terminal comprises:
the needle body is connected with the connecting part, and the connecting part extends into the through hole and is connected with the hole wall; and
the wire connection portion, connecting portion deviate from the surface of needle body connect in wire connection portion, wire connection portion electricity is connected main control unit.
4. The antenna assembly of claim 3, wherein the connecting portion provides an end surface of the oscillator section as a plane, the end surface being flush with a surface of the antenna chip when the connecting portion extends into the through hole.
5. The antenna assembly of claim 3, wherein the connecting portion comprises:
the connecting cylinder is a cylindrical cylinder with at least one open end and is made of conductive metal, the needle body extends into the connecting cylinder from one open end of the connecting cylinder, and the other end of the connecting cylinder is fixed to the wiring part; and
and the terminal medium is accommodated in the connecting cylinder and surrounds the needle body.
6. An antenna assembly according to claim 3, wherein the conductive layer is a copper metal layer and the connection portion is soldered to the through hole.
7. The antenna assembly of claim 6, wherein a surface of the antenna sheet facing away from the substrate is provided with a green oil ring layer, the green oil ring layers being respectively disposed around the via holes.
8. The antenna assembly of claim 1, wherein the substrate is designed as a circular plate with a diameter of 120.87 mm and a thickness of 3.0 mm;
and/or the antenna sheet is a copper foil sheet with the thickness of 36 micrometers, the side length a is 25 millimeters, the side length b is 45.85 millimeters, and the length value c is 14 millimeters;
and/or, the diameter of the signal pin is 1.29 millimeters, the aperture of the through hole is 6.22 millimeters, and the wiring part adopts a wiring head with an SMA specification.
9. A positioning base station, characterized in that the positioning base station comprises an antenna assembly according to any of claims 1 to 8.
10. A single base station positioning system, comprising a positioning base station and a main controller, wherein the positioning base station is the positioning base station of claim 9, and the positioning base station is electrically connected to the main controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121727185.8U CN215869819U (en) | 2021-07-28 | 2021-07-28 | Antenna assembly, positioning base station and single base station positioning system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121727185.8U CN215869819U (en) | 2021-07-28 | 2021-07-28 | Antenna assembly, positioning base station and single base station positioning system |
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| CN215869819U true CN215869819U (en) | 2022-02-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114777668A (en) * | 2022-04-12 | 2022-07-22 | 新拓三维技术(深圳)有限公司 | Desktop type elbow measuring method and device |
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2021
- 2021-07-28 CN CN202121727185.8U patent/CN215869819U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114777668A (en) * | 2022-04-12 | 2022-07-22 | 新拓三维技术(深圳)有限公司 | Desktop type elbow measuring method and device |
| CN114777668B (en) * | 2022-04-12 | 2024-01-16 | 新拓三维技术(深圳)有限公司 | Desktop type bent pipe measuring method and device |
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