3D positioning antenna based on UWB module

Abstract

The utility model relates to a 3D positioning antenna based on a UWB module. The 3D positioning antenna based on the UWB module comprises the UWB module and a 3D positioning antenna module, the 3D positioning antenna module comprises a circuit board, a first antenna, a second antenna and a third antenna, the first antenna, the second antenna and the third antenna are arranged on the circuit board, and the first antenna, the second antenna and the third antenna are electrically connected with the UWB module. According to the scheme provided by the invention, high-precision indoor positioning can be realized by receiving and transmitting UWB signals for distance measurement and angle measurement.

Description

Technical Field

[0001] The utility model relates to the technical field of circuits, and in particular to a 3D positioning antenna based on a UWB module. Background Art

[0002] Currently, the UWB module is a device based on ultra-wideband technology, which is used to achieve high-precision indoor positioning.

[0003] In related technologies, UWB modules are usually equipped with only one antenna, which can only perform one-dimensional ranging and positioning functions, resulting in low positioning accuracy. Utility Model Content

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a 3D positioning antenna based on a UWB module, which can achieve high-precision indoor positioning by transmitting and receiving UWB signals for distance and angle measurement.

[0005] The purpose of this utility model is achieved through the following technical solutions:

[0006] In a first aspect, the present application provides a 3D positioning antenna based on a UWB module, comprising: a UWB module; a 3D positioning antenna module, wherein the 3D positioning antenna module comprises a circuit board, a first antenna, a second antenna and a third antenna, wherein the first antenna, the second antenna and the third antenna are respectively arranged on the circuit board, and the first antenna, the second antenna and the third antenna are respectively electrically connected to the UWB module.

[0007] It also includes a main control module, which includes a chip U8, and the chip U8 is electrically connected to the UWB module.

[0008] The main control module further includes an interface, which is provided on the chip U8.

[0009] The main control module further includes an inductor L1 and a capacitor C7. One end of the inductor L1 is electrically connected to the chip U8. The other end of the inductor L1 is electrically connected to one end of the capacitor C7. The other end of the capacitor C7 is grounded.

[0010] The main control module further includes a resistor R41 , and the resistor R41 is electrically connected to the chip U8 .

[0011] The main control module further includes a radio frequency unit, and the radio frequency unit is electrically connected to the chip U8.

[0012] The main control module further includes a capacitor C63, and the capacitor C63 is electrically connected to the chip U8.

[0013] The main control module further includes a capacitor C64, and the capacitor C64 is electrically connected to the chip U8.

[0014] It also includes a capacitor C66, one end of which is electrically connected to the UWB module, and the other end of which is grounded.

[0015] It also includes a capacitor C67, one end of which is electrically connected to the UWB module, and the other end of which is grounded.

[0016] Compared with the prior art, the present invention has at least the following advantages:

[0017] The first antenna in this application is used for vertical azimuth reception, the second antenna is used for horizontal azimuth reception, and the third antenna is used for ranging transmission and reception. When these three antennas work together, accurate 3D positioning can be achieved. If the user only wants to achieve 2D positioning, only the second and third antennas can be used. In this way, through the above design, high-precision indoor positioning can be achieved by transmitting and receiving UWB signals for ranging and angle measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for use in the embodiments.

[0019] Figure 1 This is a functional module diagram of a 3D positioning antenna based on a UWB module in one embodiment of the present invention;

[0020] Figure 2 Schematic diagram of the structure of a 3D positioning antenna module in one embodiment of the present invention;

[0021] Figure 3 This is a circuit diagram of a 3D positioning antenna based on a UWB module in one embodiment of the present invention.

[0022] Figure 4 This is a circuit diagram of a UWB module in one embodiment of the present invention;

[0023] Figure 5 This is a circuit diagram of a main control module in one embodiment of the present utility model;

[0024] Figure 6 FIG. 1 is a circuit diagram of a radio frequency unit in an embodiment of the present invention. DETAILED DESCRIPTION

[0025] The following describes embodiments of the present application in more detail with reference to the accompanying drawings. Although the accompanying drawings illustrate embodiments of the present application, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.

[0026] It should be understood that although the terms "first", "second", "third", etc. may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0027] Unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," and the like should be interpreted broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0028] See also Figure 1 、 Figure 2 、 Figure 3 and Figure 4 A 3D positioning antenna based on a UWB module includes: a UWB module 100 and a 3D positioning antenna module 200. The 3D positioning antenna module 200 includes a circuit board 210, a first antenna 220, a second antenna 230 and a third antenna 240. The first antenna 220, the second antenna 230 and the third antenna 240 are respectively arranged on the circuit board 210, and the first antenna 220, the second antenna 230 and the third antenna 240 are respectively electrically connected to the UWB module 100.

[0029] It should be noted that the first antenna 220, the second antenna 230 and the third antenna 240 are all welded. The first antenna 220, the second antenna 230 and the third antenna 240 are rectangular cross-sectional structures with a size of 9*11.4mm. The first antenna 220 is used for receiving 3D AOA vertical angle information, the second antenna 230 is used for transmitting and receiving TDOA / TOF distance information, and the third antenna 240 is used for receiving 3D AOA horizontal angle information, where AOA is the angle of arrival, TDOA is the time difference of arrival, and TOF is the time of flight ranging. Furthermore, one side of the circuit board 210 is used to set up a rectangular antenna, and each antenna on the other side is provided with a feed point and a ground pad, which are connected to the UWB module 100 through a 50Ω coaxial cable, and the circuit board 210 on this side is fully copper-covered and grounded. Furthermore, the three antennas achieve dual resonance at around 6.5GHz and 8GHz.

[0030] It should also be noted that the first antenna 220 is Figure 2 In the RX2-V, the second antenna 230 is Figure 2 RX2-H in the third antenna 240 is Figure 3 TX1 / RX1 in.

[0031] By using the first antenna 220, the second antenna 230, and the third antenna 240, when all three antennas work together, accurate 3D positioning can be achieved. If the user only desires 2D positioning, only the second antenna 23 and the third antenna 240 can be used. This design enables high-precision indoor positioning by transmitting and receiving UWB signals for ranging and angle measurement.

[0032] See also Figure 5 In one embodiment, the 3D positioning antenna based on the UWB module further includes a main control module, which includes a chip U8, and the chip U8 is electrically connected to the UWB module 100. Specifically, the main control module also includes an interface, which is provided on the chip U8.

[0033] It should be noted that the chip U8 is a Bluetooth chip, and its interfaces include SPI, UART and other interfaces. The UWB module 100 is electrically connected to the chip U8 via the SPI interface.

[0034] See also Figure 5 In one embodiment, the main control module further includes an inductor L1 and a capacitor C7, one end of the inductor L1 is electrically connected to the chip U8, the other end of the inductor L1 is electrically connected to one end of the capacitor C7, and the other end of the capacitor C7 is grounded.

[0035] It should be noted that the inductor L1 is a power inductor component that needs to be added to the buck circuit of the chip U8, and the capacitor C7 plays a filtering role.

[0036] See also Figure 5 In one embodiment, the main control module further includes a resistor R41, and the resistor R41 is electrically connected to the chip U8.

[0037] It should be noted that the resistor R41 is a pull-up resistor.

[0038] See also Figure 6 In one embodiment, the main control module further includes a radio frequency unit, which is electrically connected to the chip U8.

[0039] It should be noted that the radio frequency unit is used to transmit and receive Bluetooth signals.

[0040] See also Figure 5In one embodiment, the main control module further includes a capacitor C63, which is electrically connected to the chip U8. Specifically, the main control module further includes a capacitor C64, which is electrically connected to the chip U8.

[0041] It should be noted that capacitor C63 and capacitor C64 are both matching capacitors of the crystal oscillator, and are used to adjust the frequency deviation of the crystal oscillator.

[0042] See also Figure 4 In one embodiment, the device further includes a capacitor C66, one end of which is electrically connected to the UWB module 100 and the other end of which is grounded. Specifically, the device further includes a capacitor C67, one end of which is electrically connected to the UWB module 100 and the other end of which is grounded.

[0043] It should be noted that capacitor C66 and capacitor C67 are filter capacitors for the power pins of the UWB module 100 .

[0044] The scheme of the present application has been described in detail above with reference to the accompanying drawings. In the above embodiments, the descriptions of each embodiment have their own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments. Those skilled in the art should also be aware that the actions and modules involved in the description are not necessarily required for this application. In addition, it is understood that the steps in the method of the embodiment of the present application can be adjusted in sequence, merged and deleted according to actual needs, and the modules in the device of the embodiment of the present application can be merged, divided and deleted according to actual needs.

[0045] The embodiments of the present application have been described above. The above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is selected to best explain the principles of the embodiments, their practical applications, or improvements to the technology in the market, or to enable other persons skilled in the art to understand the embodiments disclosed herein.

Claims

1. A 3D positioning antenna based on a UWB module, characterized in that: include: UWB module; A 3D positioning antenna module, the 3D positioning antenna module includes a circuit board, a first antenna, a second antenna and a third antenna, the first antenna, the second antenna and the third antenna are respectively arranged on the circuit board, and the first antenna, the second antenna and the third antenna are respectively electrically connected to the UWB module.

2. The 3D positioning antenna based on the UWB module according to claim 1, characterized in that: It also includes a main control module, which includes a chip U8, and the chip U8 is electrically connected to the UWB module.

3. The 3D positioning antenna based on the UWB module according to claim 2, characterized in that: The main control module also includes an interface, and the interface is arranged on the chip U8.

4. The 3D positioning antenna based on the UWB module according to claim 2, characterized in that: The main control module further includes an inductor L1 and a capacitor C7. One end of the inductor L1 is electrically connected to the chip U8. The other end of the inductor L1 is electrically connected to one end of the capacitor C7. The other end of the capacitor C7 is grounded.

5. The 3D positioning antenna based on the UWB module according to claim 2, characterized in that: The main control module further includes a resistor R41, and the resistor R41 is electrically connected to the chip U8.

6. The 3D positioning antenna based on the UWB module according to claim 5, characterized in that: The main control module also includes a radio frequency unit, and the radio frequency unit is electrically connected to the chip U8.

7. The 3D positioning antenna based on the UWB module according to claim 5, characterized in that: The main control module further includes a capacitor C63, and the capacitor C63 is electrically connected to the chip U8.

8. The 3D positioning antenna based on the UWB module according to claim 7, characterized in that: The main control module further includes a capacitor C64, and the capacitor C64 is electrically connected to the chip U8.

9. The 3D positioning antenna based on the UWB module according to claim 1, characterized in that: It also includes a capacitor C66, one end of which is electrically connected to the UWB module, and the other end of which is grounded.

10. The 3D positioning antenna based on the UWB module according to claim 1, characterized in that: It also includes a capacitor C67, one end of which is electrically connected to the UWB module, and the other end of which is grounded.

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