An unmanned aerial vehicle electromagnetic signal receiving test device

Abstract

The utility model relates to unmanned plane testing arrangement technical field, concretely relates to a kind of for unmanned plane electromagnetic signal reception testing arrangement, including device base, the top of device base is connected with test platform by rotating platform rotation, the top of device base is equipped with connecting mechanism, the connecting mechanism includes support column, the top of connecting mechanism is equipped with mounting mechanism, and the mounting mechanism includes electromagnetic interference generator.The utility model is adjusted by the mutual cooperation between the internal parts of connecting mechanism, the distance between telescopic column movement electromagnetic interference generator and unmanned plane is adjusted, the data of unmanned plane in different height affected by electromagnetic environment is better detected, the mutual cooperation between the internal parts of mounting mechanism is facilitated, the installation replacement of electromagnetic interference generator on telescopic column is completed, so that test platform can be according to detection change different electromagnetic interference generator.

Description

Technical Field

[0001] This utility model relates to the technical field of unmanned aerial vehicle (UAV) testing devices, specifically to a device for testing the electromagnetic signal reception of UAVs. Background Technology

[0002] Unmanned aerial vehicles (UAVs) possess advantages such as small size, low cost, and portability, and are widely used in civilian fields such as reconnaissance and surveillance, aerial photography, surveying, security, environmental protection, and disaster monitoring and assessment. The UAV data link is the link connecting UAVs and ground control stations, and is crucial for ensuring real-time communication, information sharing, and collaborative operation among various devices within the UAV system. However, the communication environment of UAV data links is often highly complex. Electromagnetic signals are affected not only by surrounding terrain, weather, and aircraft attitude during propagation, but also by various forms of interference, even high-power human interference. Under the combined influence of complex electromagnetic environments and interference, the transmission performance of UAV data links can deteriorate sharply, and in severe cases, even paralyze the entire system. Therefore, in the development and research of UAV data links, it is necessary to test and evaluate the anti-interference performance of the UAV data link system to ensure normal communication of the UAV system in complex electromagnetic environments.

[0003] A search revealed an invention patent with publication number CN109217956B, which specifically discloses a semi-physical simulation method and device for electromagnetic interference communication environment of unmanned aerial vehicles (UAVs). This invention combines software and hardware simulation, supporting not only complex channel fading and various interference patterns but also effectively simulating the influence of the antenna and the geometry of the device under test (DUT) on the radiated signal. The invention also supports simulation of communication scenarios where the transmitter, multiple jammers, and receiver are all in high-speed movement, as well as performance evaluation of the DUT, and supports automated testing and result analysis.

[0004] Although the aforementioned patent uses a combination of software simulation and hardware simulation to support complex channel fading and various interference patterns, and effectively simulates the influence of the antenna and the geometry of the device under test on the radiated signal, the UAV electromagnetic signal receiving test device cannot accurately simulate the impact of the different altitudes between the UAV and the electromagnetic environment on the received electromagnetic signal data.

[0005] Therefore, it is necessary to propose a test device for receiving electromagnetic signals from unmanned aerial vehicles (UAVs) to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide a device for testing electromagnetic signal reception of unmanned aerial vehicles (UAVs). Through the cooperation of internal components of the connecting mechanism, the distance between the telescopic column and the UAV can be adjusted by moving the telescopic column, thus better detecting the data of the UAV affected by the electromagnetic environment at different altitudes. The cooperation of internal components of the mounting mechanism also facilitates the installation and replacement of the electromagnetic interference generator on the telescopic column, allowing the test platform to replace different electromagnetic interference generators according to the test requirements. This solves the problem in existing UAV electromagnetic signal reception test devices that cannot accurately simulate the impact of different altitudes on electromagnetic signal reception data caused by varying altitudes between the UAV and the electromagnetic environment.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a test device for receiving electromagnetic signals from unmanned aerial vehicles (UAVs), comprising a device base, a test platform rotatably connected to the top of the device base via a turntable, a connecting mechanism installed at the top of the device base, and an installation mechanism installed at the top of the connecting mechanism.

[0008] The connecting mechanism includes a support column, which is mechanically fixed to both sides of the top of the test platform. A control motor is mechanically fixed inside the test platform. The output end of the control motor is mechanically connected to a threaded rod through a coupling and is rotatably connected to the inside of the test platform and the support column. A telescopic column is slidably sleeved inside the support column and is slidably sleeved with the outer wall of the threaded rod.

[0009] The installation mechanism includes an electromagnetic interference generator, which is installed at the top of a telescopic column. A threaded column is mechanically fixed to the top of the telescopic column and extends into the interior of the electromagnetic interference generator. Conical sliders are slidably connected to both sides of the outer wall of the telescopic column and fit against the inner wall of a support column. A square column is vertically slidably connected between multiple conical sliders and extends through the telescopic column, the threaded column, and into the interior of the electromagnetic interference generator. A support ring is sleeved and fixed to the outer wall of the square column and slidably connected to the interior of the telescopic column. A support spring is mechanically connected between the top of the support ring and the inner wall of the telescopic column and sleeved on the outer wall of the square column.

[0010] Preferably, the connecting mechanism further includes a connecting bracket, which is mechanically fixed to both sides of the top of the test platform. The top of the connecting bracket is equipped with multiple snap-fit ​​components and is clamped and engaged with the bottom of the UAV. The top of the test platform is equipped with a signal receiving module, which is located between the connecting bracket and the support column.

[0011] Preferably, one side of the device base is connected to multiple cables, which are respectively connected to the signal receiving module, the electromagnetic interference generator and the UAV itself for data connection. The buckle assembly consists of a female buckle and a female buckle, with a clamping space between them that matches the bottom bracket of the UAV.

[0012] Preferably, the support column has an internal expansion groove that matches the telescopic column, the inner wall of the telescopic column has an internal thread that matches the external thread of the threaded rod, and a reduction gearbox is installed between the control motor and the threaded rod.

[0013] Preferably, the bottom end of the electromagnetic interference generator is provided with a threaded groove that matches the threaded column, the inside of the electromagnetic interference generator is provided with a square groove that matches the square column, the contact surface between the outer wall of the conical slider and the inner wall of the support column is set as an arc surface, and a certain distance is left between the top of the electromagnetic interference generator and the UAV.

[0014] Preferably, the contact surface between the top of the tapered slider and the bottom of the square column is set as a tapered surface, the inner wall of the telescopic column is provided with a support groove that matches the support ring, and the inner wall of the telescopic column is provided with a moving groove that matches the square column.

[0015] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0016] By starting the control motor, the control motor drives the threaded rod to rotate, causing the threaded rod to rotate and the telescopic column to extend completely from inside the support column. This releases the inner wall of the support column from the pressure of the conical slider, and the conical slider from the pressure of the square column. Consequently, the support spring returns to its original position, pushing the support ring to move. The movement of the support ring causes the square column to move, moving it out from the bottom of the electromagnetic interference generator. This releases the rotation limit between the electromagnetic interference generator and the threaded column. By rotating the electromagnetic interference generator, the electromagnetic interference generator can be separated from the threaded column through the thread, thus completing the disassembly and replacement of the electromagnetic interference generator on the telescopic column.

[0017] By placing the drone on the connecting bracket and securing it to the bottom bracket using the snap-fit ​​assembly on the bracket, the drone is mounted and fixed in place. Activating the control motor drives a threaded rod to rotate, which in turn moves a telescopic column. This movement, in turn, moves the electromagnetic interference generator at the top, altering the distance between the generator and the drone. This allows for better detection of the drone's electromagnetic interference data at different altitudes. Multiple cables are connected to one side of the device's base, providing data connections to the signal receiving module, the electromagnetic interference generator, and the drone itself. This facilitates the signal receiving module's collection of data from the generator and the drone, completing the electromagnetic signal reception and detection. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a cross-sectional structural diagram of the testing platform of this utility model;

[0021] Figure 3 This is a cross-sectional structural diagram of the telescopic column of this utility model;

[0022] Figure 4 For the present utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Device base; 101. Test platform; 2. Connecting mechanism; 201. Connecting bracket; 202. Buckle assembly; 203. Signal receiving module; 204. Support column; 205. Control motor; 206. Threaded rod; 207. Telescopic column; 3. Installation mechanism; 301. Electromagnetic interference generator; 302. Threaded column; 303. Conical slider; 304. Square column; 305. Support ring; 306. Support spring. Detailed Implementation

[0025] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0026] This utility model provides, for example Figure 1-4 The device shown is an electromagnetic signal receiving test device for unmanned aerial vehicles. It includes a device base 1, a test platform 101 rotatably connected to the top of the device base 1 via a turntable, a connecting mechanism 2 installed at the top of the device base 1, and an installation mechanism 3 installed at the top of the connecting mechanism 2.

[0027] The connecting mechanism 2 includes a support column 204, which is mechanically fixed to both sides of the top of the test platform 101. A control motor 205 is mechanically fixed inside the test platform 101. The output end of the control motor 205 is mechanically connected to a threaded rod 206 through a coupling and is rotatably connected to the inside of the test platform 101 and the support column 204. A telescopic column 207 is slidably sleeved inside the support column 204 and is slidably sleeved with the outer wall of the threaded rod 206.

[0028] The mounting mechanism 3 includes an electromagnetic interference generator 301, which is mounted on the top of the telescopic column 207. A threaded column 302 is mechanically fixed to the top of the telescopic column 207 and extends into the interior of the electromagnetic interference generator 301. Conical sliders 303 are slidably connected to both sides of the outer wall of the telescopic column 207 and fit against the inner wall of the support column 204. A square column 304 is vertically slidably connected between multiple conical sliders 303 and extends through the telescopic column 207, the threaded column 302, and into the interior of the electromagnetic interference generator 301. A support ring 305 is sleeved and fixed to the outer wall of the square column 304 and slidably connected to the interior of the telescopic column 207. A support spring 306 is mechanically connected between the top of the support ring 305 and the inner wall of the telescopic column 207 and sleeved with the outer wall of the square column 304.

[0029] The interoperability of the internal parts of the connecting mechanism 2 facilitates the movement of the telescopic column 207 to adjust the distance between the electromagnetic interference generator 301 and the UAV, thereby better detecting the data of the UAV being affected by the electromagnetic environment at different altitudes. The interoperability of the internal parts of the mounting mechanism 3 facilitates the installation and replacement of the electromagnetic interference generator 301 on the telescopic column 207, allowing the test platform 101 to replace different electromagnetic interference generators 301 according to the test requirements.

[0030] Refer to the instruction manual appendix Figure 1-4 The connecting mechanism 2 also includes a connecting bracket 201, which is mechanically fixed to both sides of the top of the test platform 101. Multiple snap-fit ​​components 202 are installed on the top of the connecting bracket 201 and clamp and engage with the bottom of the drone. A signal receiving module 203 is installed on the top of the test platform 101 and is located between the connecting bracket 201 and the support column 204. Through the cooperation between the internal parts of the connecting mechanism 2, the connection and installation of the drone on the connecting bracket 201 can be completed.

[0031] Refer to the instruction manual appendix Figure 1-4 The device base 1 has multiple cables connected to one side, which are respectively connected to the signal receiving module 203, the electromagnetic interference generator 301 and the drone itself. The buckle assembly 202 consists of a female buckle and a female buckle, with a clamping space between them that matches the bottom bracket of the drone. The multiple cables connected to one side of the device base 1 are respectively connected to the signal receiving module 203, the electromagnetic interference generator 301 and the drone itself, which facilitates the signal receiving module 203 to collect the detection data of the electromagnetic interference generator 301 and the drone itself.

[0032] Refer to the instruction manual appendix Figure 1-4The support column 204 has a telescopic groove inside that matches the telescopic column 207. The inner wall of the telescopic column 207 has an internal thread that matches the external thread of the threaded rod 206. A reduction gearbox is installed between the control motor 205 and the threaded rod 206. The telescopic groove inside the support column 204 matches the telescopic column 207. The internal thread of the telescopic column 207 matches the external thread of the threaded rod 206. The rotation of the threaded rod 206 drives the telescopic column 207 to telescopically move inside the support column 204.

[0033] Refer to the instruction manual appendix Figure 1-4 The bottom end of the electromagnetic interference generator 301 has a threaded groove that matches the threaded post 302, and the inside of the electromagnetic interference generator 301 has a square groove that matches the square post 304. The outer wall of the tapered slider 303 and the inner wall of the support post 204 are set as arc surfaces. A certain gap is left between the top of the electromagnetic interference generator 301 and the UAV. The threaded groove at the bottom end of the electromagnetic interference generator 301 that matches the threaded post 302 and the square groove inside the electromagnetic interference generator 301 that matches the square post 304 make it easy for the electromagnetic interference generator 301 to be connected and fixed to the telescopic post 207 through the threaded post 302. The square post 304 penetrates into the electromagnetic interference generator 301 to complete the rotation limit between the electromagnetic interference generator 301 and the threaded post 302.

[0034] Refer to the instruction manual appendix Figure 1-4 The top of the tapered slider 303 and the bottom of the square column 304 are connected by a tapered surface. The inner wall of the telescopic column 207 is provided with a support groove that matches the support ring 305. The inner wall of the telescopic column 207 is provided with a moving groove that matches the square column 304. By setting the top of the tapered slider 303 and the bottom of the square column 304 to be tapered, it is easy for the tapered slider 303 and the square column 304 to press against each other.

[0035] The working principle of this practical application is as follows:

[0036] Refer to the instruction manual appendix Figure 1-4By starting the control motor 205, the control motor 205 drives the threaded rod 206 to rotate. The rotation of the threaded rod 206 causes the telescopic column 207 to extend completely from the inside of the support column 204, releasing the inner wall of the support column 204 from the pressure on the conical slider 303. The conical slider 303 then releases the pressure on the square column 304. Subsequently, the support spring 306 resets and pushes the support ring 305 to move. The movement of the support ring 305 causes the square column 304 to move, moving it out from the bottom of the electromagnetic interference generator 301. This releases the rotation limit between the electromagnetic interference generator 301 and the threaded column 302. By rotating the electromagnetic interference generator 301, the electromagnetic interference generator 301 can be separated from the threaded column 302 through the thread, thus completing the disassembly and replacement of the electromagnetic interference generator 301 on the telescopic column 207.

[0037] Refer to the instruction manual appendix Figure 1-4 By placing the drone on the connecting bracket 201 and connecting and fixing the drone's bottom bracket with the buckle assembly 202 on the connecting bracket 201, the drone is mounted and fixed on the connecting bracket 201. The control motor 205 is started, causing the threaded rod 206 to rotate. The rotation of the threaded rod 206 drives the telescopic column 207 to move, which in turn moves the electromagnetic interference generator 301 at the top, changing the distance between the electromagnetic interference generator 301 and the drone. This allows for better detection of the drone's data on the electromagnetic environment at different altitudes. Multiple cables are connected to one side of the device base 1, which are respectively connected to the signal receiving module 203, the electromagnetic interference generator 301, and the drone itself. This facilitates the signal receiving module 203 to collect the detection data from the electromagnetic interference generator 301 and the drone itself, completing the reception and detection of electromagnetic signals.

[0038] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A device for testing electromagnetic signal reception in unmanned aerial vehicles (UAVs), characterized in that: Includes a device base (1), the top of which is rotatably connected to a test platform (101) via a turntable, a connecting mechanism (2) is installed on the top of the device base (1), and an installation mechanism (3) is installed on the top of the connecting mechanism (2). The connecting mechanism (2) includes a support column (204), which is mechanically fixed on both sides of the top of the test platform (101). A control motor (205) is mechanically fixed inside the test platform (101). The output end of the control motor (205) is mechanically connected to a threaded rod (206) through a coupling and is rotatably connected to the inside of the test platform (101) and the support column (204). A telescopic column (207) is slidably sleeved inside the support column (204) and is slidably sleeved with the outer wall of the threaded rod (206). The installation mechanism (3) includes an electromagnetic interference generator (301), which is installed at the top of the telescopic column (207). A threaded column (302) is mechanically fixed at the top of the telescopic column (207) and extends into the interior of the electromagnetic interference generator (301). Conical sliders (303) are slidably connected to both sides of the outer wall of the telescopic column (207) and fit against the inner wall of the support column (204). A square column (304) is vertically slidably connected between multiple conical sliders (303) and extends through the telescopic column (207), the threaded column (302) and into the interior of the electromagnetic interference generator (301). A support ring (305) is sleeved and fixed to the outer wall of the square column (304) and slidably connected to the interior of the telescopic column (207). A support spring (306) is mechanically connected between the top of the support ring (305) and the inner wall of the telescopic column (207) and sleeved with the outer wall of the square column (304).

2. The electromagnetic signal receiving test device for unmanned aerial vehicles according to claim 1, characterized in that: The connecting mechanism (2) also includes a connecting bracket (201), which is mechanically fixed on both sides of the top of the test platform (101). Multiple snap-fit ​​components (202) are installed on the top of the connecting bracket (201) and clamped and engaged with the bottom of the UAV. A signal receiving module (203) is installed on the top of the test platform (101) and is located between the connecting bracket (201) and the support column (204).

3. The electromagnetic signal receiving test device for unmanned aerial vehicles according to claim 2, characterized in that: The device base (1) has multiple cables connected to one side, and they are respectively connected to the signal receiving module (203), the electromagnetic interference generator (301) and the UAV itself. The buckle assembly (202) consists of a female buckle and a female buckle, and there is a clamping space between them that matches the bottom bracket of the UAV.

4. The electromagnetic signal receiving test device for unmanned aerial vehicles according to claim 1, characterized in that: The support column (204) has an internal expansion groove that matches the telescopic column (207), and the inner wall of the telescopic column (207) has an internal thread that matches the external thread of the threaded rod (206). A reduction gearbox is installed between the control motor (205) and the threaded rod (206).

5. The electromagnetic signal receiving test device for unmanned aerial vehicles according to claim 1, characterized in that: The bottom end of the electromagnetic interference generator (301) is provided with a threaded groove that matches the threaded column (302). The inside of the electromagnetic interference generator (301) is provided with a square groove that matches the square column (304). The outer wall of the conical slider (303) and the inner wall of the support column (204) are set as arc surfaces. A certain distance is left between the top of the electromagnetic interference generator (301) and the UAV.

6. The electromagnetic signal receiving test device for unmanned aerial vehicles according to claim 1, characterized in that: The top of the tapered slider (303) and the bottom of the square column (304) are connected by a tapered surface. The inner wall of the telescopic column (207) is provided with a support groove that matches the support ring (305). The inner wall of the telescopic column (207) is provided with a moving groove that matches the square column (304).

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