Antenna switching device and direction-finding positioning system

Abstract

The utility model provides an antenna switching device and a direction-finding positioning system, and the antenna switching device comprises a housing. The first connector is arranged on the shell in a penetrating manner, and the first connector is configured to be connected with external data acquisition equipment so as to input a control signal; the second connectors are arranged on the shell in a penetrating mode, the second connectors and the first connectors are located on the adjacent side faces respectively, and the second connectors are connected with radio frequency front-end modules connected with the antenna oscillators; the first control panel is arranged on the inner side of the shell and is connected with the first connector, and the first control panel is configured to input a control signal of the data acquisition equipment and is connected with an external power supply; the second control panel is arranged on the inner side of the shell and connected with the second connector, and the second control panel is configured to input a control signal to the radio frequency front-end module and supply power to the radio frequency front-end module; and the cable assembly is arranged in the shell, and the cable assembly is configured to be connected with the first control panel and the second control panel.

Description

Technical Field

[0001] The utility model belongs to the technical field of radio direction finding and positioning, and in particular relates to an antenna switching device and a direction finding and positioning system. Background Art

[0002] The direction finding and positioning system is based on the propagation characteristics of electromagnetic waves. Its purpose is to determine the direction and specific location of the radiation source, thereby achieving wireless positioning. There are many types of array antennas used in the structure of the existing direction finding and positioning system, such as circular array antennas, L-shaped array antennas, and linear array antennas. Each array antenna is equipped with multiple antenna elements, and each antenna element needs to be configured with an antenna filter amplifier circuit board. Therefore, one array antenna requires multiple filter amplifier circuit boards.

[0003] In the existing direction-finding and positioning systems, in order to realize direction-finding and positioning products with a wide working frequency band, filters often need to be designed in sections, that is, different filters need to be switched when direction-finding and positioning work in different frequency bands. In addition, the antenna filter amplifier circuit board is also designed with an RF amplifier, and the RF amplifier in each antenna filter amplifier circuit board needs to be powered. However, because the antenna elements in the array antenna are designed separately and the distance between the elements is far, it is impossible to select the frequency band and power the filter amplifier circuit boards configured for multiple antenna elements through one interface. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of the utility model is to provide an antenna switching device and a direction finding and positioning system to solve the problem that the existing array antenna element filter amplifier cannot have one-to-many control and one-to-many power supply.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] An antenna switching device, comprising:

[0007] shell;

[0008] A first connector, which is disposed on the housing, and is configured to connect to an external data acquisition device to input a control signal;

[0009] A plurality of second connectors are provided on the housing, the second connectors and the first connectors are respectively located on adjacent sides, the second connectors are connected to a radio frequency front-end module connected to an antenna vibrator, and the radio frequency front-end module is used to transmit the signal collected by the antenna vibrator back to the data acquisition device;

[0010] A first control board, which is disposed inside the housing and connected to the first connector, and is configured to input a control signal of the data acquisition device and connect an external power supply;

[0011] a second control board, which is disposed on the inner side of the housing and connected to the second connector, and the second control board is configured to input control signals and supply power to the RF front-end module;

[0012] A cable assembly is disposed inside the housing and is configured to connect the first control board and the second control board.

[0013] Preferably, ten groups of the second connectors are arranged on each of two oppositely disposed side surfaces of the housing.

[0014] Preferably, the first connectors form a group.

[0015] Preferably, the first control board is fastened to the housing by a third screw.

[0016] Preferably, the second control board is fastened to the housing via a fourth screw.

[0017] Preferably, the cable assembly comprises:

[0018] a first cable connected to the first control board and one of the second control boards;

[0019] A second cable is connected to the first control board and another second control board.

[0020] The utility model also provides a direction finding and positioning system, comprising the antenna switching device, a data acquisition device, a radio frequency front-end module and an antenna vibrator, wherein the antenna switching device is connected to the data acquisition device and the radio frequency front-end module, and the radio frequency front-end module is connected to the antenna vibrator;

[0021] The data acquisition device can send an information acquisition signal to the antenna switching device, and receive a return signal from the radio frequency front-end module;

[0022] The antenna switching device is used to supply power to the RF front-end module and input control signals to the RF front-end module. The RF front-end module can also transmit the signal collected by the antenna vibrator back to the data acquisition device.

[0023] Compared with the prior art, the utility model has the following beneficial effects: the first connector is used as the input end of the control signal, the first control board and the second control board are electrically connected through a cable assembly arranged inside the shell, and multiple second connectors arranged on the shell are used to connect multiple different antenna elements. The second control board can simultaneously and individually control the operation of multiple different second connectors, and thus can individually control the operation of the antenna elements connected to the second connectors.

[0024] In addition, the second control board controls the internal power supply to be converted into a suitable voltage for the RF front-end module connected to the antenna vibrator to work. Therefore, the first control board and the second control board of the antenna adapter device set inside the housing 1 only need to be electrically connected through the internal cable assembly, that is, the input control signal and the external power supply can be transmitted to each second connector through the cable assembly, avoiding a large number of wiring inside the housing, improving the reliability of the product, and reducing the difficulty and cost of production. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural diagram of the antenna adapter in the utility model from a first angle;

[0026] Figure 2 A structural diagram of the antenna adapter in the utility model from a second angle;

[0027] Figure 3 It is a structural schematic diagram of the antenna switching device in the utility model;

[0028] Figure 4 It is a structural schematic diagram of the direction finding and positioning system in the utility model.

[0029] Among them, 1. housing; 2. first connector; 3. second connector; 4. first control board; 5. second control board; 6. RF front-end module; 7. control module; 8. RF amplifier; 9. first four-to-one RF switch; 10. second four-to-one RF switch; 11. filter module; 12. data acquisition equipment. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0033] In the description of the present utility model, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply 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 on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0034] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0036] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0037] like Figure 1-Figure 4 As shown, an antenna switching device is provided in this embodiment, including a housing 1, a first connector 2, a plurality of second connectors 3, a first control board 4, a second control board 5 and a cable assembly, wherein the first control board 4 is arranged on the inner side of the housing 1, and the first connector 2 is passed through the housing 1 and connected to the first control board 4. Specifically, the first connector 2 is welded to the first control board 4 through pins. Specifically, the first connector 2 is a group, and the first connector 2 is a DC12V control port, and the first connector 2 is used to connect an external data acquisition device 12 to input a control signal. At the same time, the first connector 2 is connected to an external power supply, and the voltage of the external power supply is 12V. The cable assembly is arranged inside the housing 1, and the cable assembly is configured to connect the first control board 4 and the second control board 5.

[0038] The four groups of control signals and the external power supply with a voltage of 12V are input to the first control board 4 through the first connector 2. The first control board 4 converts the four RS422 control signals into four LVTTL level signals, and divides them into two groups. Each group of two LVTTL level signals is transmitted to the second control board through the cable assembly, and the power supply with a voltage of 12V is transmitted to the second control board 5.

[0039] The second connector 3 is provided on the housing 1. The second connector 3 and the first connector 2 are located on adjacent sides. The second connector 3 is configured to connect to the RF front-end module 6 connected to the antenna element. The RF front-end module 6 is used to transmit the signal collected by the antenna element back to the data acquisition device 12. Multiple sets of second connectors 3 are provided on each of the oppositely arranged sides of the housing 1.

[0040] The second control board 5 is arranged on the inner side of the housing 1 and connected to the second connector 3. Specifically, the second connector 3 and the second control board 5 are welded by pins, and the second control board 5 is configured to input control signals and power to the RF front-end module 6 connected to the antenna vibrator. The RF front-end module 6 can receive the control signal and power of the second control board 5, and transmit the signal collected by the antenna vibrator back to the data acquisition device 12.

[0041] In this embodiment, the first connector 2 is used as the input end of the control signal, and the first control board 4 and the second control board 5 are electrically connected through a cable assembly arranged inside the shell 1. The multiple second connectors 3 arranged on the shell 1 are used to connect multiple different antenna elements. The second control board 5 can simultaneously and individually control the operation of multiple different second connectors 3, and then can individually control the operation of the antenna elements connected to the second connectors 3.

[0042] In addition, the second control board 5 controls the internal power supply to be converted into a suitable voltage for the RF front-end module 6 connected to the antenna element to work. Specifically, the second control board 5 converts the power supply with a voltage of 12V into a power supply with a voltage of 5V.

[0043] Therefore, the first control board 4 and the second control board 5 arranged inside the shell 1 of the antenna adapter device only need to be electrically connected through an internal cable assembly, that is, the input control signal and the external power supply can be transmitted to each second connector 3 through the cable assembly, thereby avoiding a large number of wiring inside the shell 1, improving the reliability of the product, and reducing the production difficulty and cost.

[0044] Further preferably, the second connector 3 is in 20 groups, and 10 groups of second connectors 3 are arranged on each side of an oppositely arranged side of the housing 1. Among them, the 20 groups of second connectors 3 can also be arranged on the same side of the housing 1. The above arrangement can ensure that multiple antenna vibrators are docked at the same time, solving the problem of long distances between antenna vibrators. Since the distance between two adjacent groups of antenna vibrators of the above antenna is relatively far, if a radio frequency cable with a 1-to-20 interface is designed, since the diameter of the radio frequency cable is generally 6mm, the force at the interface of the 1-to-20 interface is too large, and since the production of the radio frequency cable is difficult, and since the control signal is divided into 20 paths, there is a problem of insufficient control signal driving ability, resulting in unreliable control signals. Therefore, the antenna adapter device is used to achieve a clear connection structure, which is easy to install and improves the reliability of the control signal.

[0045] Preferably, the ten groups of the first connectors 2 arranged on each side surface of the housing are arranged in two parallel rows, and each row is provided with five groups of the first connectors 2, so as to reduce the overall structural volume of the antenna switching device.

[0046] Preferably, the first connector 2 is provided through the housing 1 and is fastened to the housing 1 by a first screw. The second connector 3 is provided through the housing 1 and is fastened to the housing 1 by a second screw. The first connector 2 and the second connector 3 are fastened in the above manner.

[0047] Preferably, the first control board 4 is fastened to the housing 1 by a third screw.

[0048] Preferably, the second control board 5 is fastened to the housing 1 by a fourth screw.

[0049] Preferably, the cable assembly comprises a first cable connected to the first control board 4 and one of the second control boards 5 , and a second cable connected to the first control board 4 and another of the second control boards 5 .

[0050] like Figure 4 As shown, a direction finding and positioning system is also provided in this embodiment, which includes the above-mentioned antenna switching device, a data acquisition device 12, a radio frequency front-end module 6 and an antenna vibrator, wherein the antenna switching device is connected to the data acquisition device 12 and the radio frequency front-end module 6, and the radio frequency front-end module 6 is connected to the antenna vibrator. Specifically, the data acquisition device 12 is a 20-channel data acquisition device 12. The data acquisition device 12 can send information acquisition signals to the antenna switching device, and the signals collected by the antenna vibrator are signals of different frequency bands. And the data acquisition device 12 can also receive the return signal of the radio frequency front-end module 6. The antenna switching device is used to supply power to the radio frequency front-end module 6 and input control signals to the radio frequency front-end module 6. The radio frequency front-end module 6 receives the signal and selects the signal of the required frequency band from the signal collected by the antenna vibrator and transmits it back to the data acquisition device 12.

[0051] Specifically, the specific structure of the above-mentioned RF front-end module 6 includes multiple groups of control modules 7, each group of control modules 7 is connected to a group of second connectors 3 to control the operation of the second connectors 3, and the second control board 5 controls the input of control signals to the control module 7 to control the signals collected by the antenna array to be transmitted back to the data acquisition device 12. At the same time, the second control board 5 supplies power to the control module 7.

[0052] Preferably, for the specific structure of each group of control modules 7, the control module 7 includes a RF amplifier 8, a first four-to-one RF switch 9, four groups of filter modules 11, and a second four-to-one RF switch 10, wherein the second control board 5 supplies power to the control module 7 and sends a control signal to the first four-to-one RF switch 9 and the second four-to-one RF switch 10 to control the operation of the first four-to-one RF switch 9 and the second four-to-one RF switch 10.

[0053] Specifically, the antenna vibrator can collect signals of the entire frequency band and is always in the state of signal collection. The signals of the specific frequency band collected by the data collection device 12 are determined by the first four-to-one RF switch 9 and the second four-to-one switch 10 to determine which group of filter modules the signals are transmitted through. The working process of transmitting the signals collected by the antenna vibrator back to the data collection device 12 is as follows: the second control board 5 controls the first four-to-one RF switch 9 to receive the RF signal fed from the antenna vibrator and select one group of filter modules 11 to work, and the second four-to-one RF switch 10 controls the filter modules 11 of the group to transmit the RF signal to the RF amplifier, and then the signal is transmitted back to the data collection device 12.

[0054] More specifically, the first four-choice RF switch 9 is connected to the antenna element and the four groups of filter modules 11. The first four-choice RF switch 9 receives the RF signal collected by the antenna element according to the control signal, that is, selects the signal of the required frequency band from all the signals collected by the antenna element, and transmits the signal of the required frequency band to the corresponding group of filter modules 11. Only one group of filter modules works at a time. The second four-choice RF switch 10 is connected to the four groups of filter modules 11 and the RF amplifier 8 at the same time. The control signal sent by the second control board 5 controls the operation of the second four-choice RF switch 10, and then the second four-choice RF switch 10 controls the operation of the group of filter modules, and transmits the signal of the required frequency band to the RF amplifier 8 through the filter module 11 of the group. The RF amplifier 8 transmits the signal back to the data acquisition device 12 without distortion according to a certain gain.

[0055] Preferably, when working, the second control board 5 converts a power supply with a voltage of 12V into a power supply with a voltage of 5V, and supplies power to the RF amplifier 8, the first four-to-one RF switch 9, the four groups of filter modules 11, and the second four-to-one RF switch 10. The second control board 5 sends a control signal to the first four-to-one RF switch 9 and the second four-to-one RF switch 10.

[0056] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. An antenna switching device, characterized in that: include: Housing (1); A first connector (2) is provided on the housing (1), and the first connector (2) is configured to connect to an external data acquisition device (12) to input a control signal; A plurality of second connectors (3) are provided on the housing (1), the second connectors (3) and the first connector (2) are respectively located on adjacent sides, the second connectors (3) are connected to a radio frequency front-end module (6) connected to an antenna element, and the radio frequency front-end module (6) is used to transmit the signal collected by the antenna element back to the data acquisition device (12); A first control board (4), which is arranged on the inner side of the housing (1) and connected to the first connector (2), and the first control board (4) is configured to input a control signal of the data acquisition device (12) and to connect to an external power supply; a second control board (5), which is arranged on the inner side of the housing (1) and connected to the second connector (3), and the second control board (5) is configured to input control signals and supply power to the radio frequency front-end module (6); A cable assembly is arranged inside the housing (1), and the cable assembly is configured to connect the first control board (4) and the second control board (5).

2. The antenna switching device according to claim 1, characterized in that: Ten sets of the second connectors (3) are arranged on two oppositely disposed side surfaces of the housing (1).

3. The antenna switching device according to claim 1 or 2, characterized in that: The first connector (2) is a group.

4. The antenna switching device according to claim 1 or 2, characterized in that: The first control board (4) is fastened to the housing (1) via a third screw.

5. The antenna switching device according to claim 1 or 2, characterized in that: The second control board (5) is fastened to the housing (1) via a fourth screw.

6. The antenna switching device according to claim 1 or 2, characterized in that: The cable assembly comprises: a first cable connected to the first control board (4) and one of the second control boards (5); A second cable is connected to the first control board (4) and another second control board (5).

7. A direction finding and positioning system, characterized in that: The invention comprises the antenna switching device according to any one of claims 1 to 6, a data acquisition device (12), a radio frequency front-end module (6) and an antenna vibrator, wherein the antenna switching device is connected to the data acquisition device (12) and the radio frequency front-end module (6), and the radio frequency front-end module (6) is connected to the antenna vibrator; The data acquisition device (12) is capable of sending an information acquisition signal to the antenna switching device, and receiving a return signal from the radio frequency front-end module (6); The antenna switching device is used to supply power to the radio frequency front-end module (6) and input a control signal to the radio frequency front-end module (6); the radio frequency front-end module (6) can also transmit back the signal collected by the antenna element to the data acquisition device (12).

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