CN218977053U - Time delay compensation device for unmanned aerial vehicle - Google Patents

Abstract

The utility model discloses a time delay compensation device for an unmanned aerial vehicle, which comprises a lower shell (4), wherein a time delay compensation module (1), a video cable hole (8) and a plurality of aviation plug wire holes (3) are arranged on the lower shell (4), the video cable (2) is connected with the time delay compensation module (1) through the video cable hole (8), and the aviation plug wire cables are respectively connected with the time delay compensation module (1) through the aviation plug wire holes (3), and comprise a communication cable, a maintenance cable and a power cable. The utility model has simple structure, higher integration level and stronger reliability and stability; the unmanned aerial vehicle ground control system provides various interfaces, and can meet the requirement of the unmanned aerial vehicle ground control system on accurate locking of the target position.

Description

Time delay compensation device for unmanned aerial vehicle

Technical Field

The utility model relates to the technical field of unmanned aerial vehicles, in particular to a time delay compensation device for an unmanned aerial vehicle.

Background

The unmanned aerial vehicle is provided with an EO (photoelectric tracking system), the ground control system performs target position positioning through video images downloaded by the EO, and then the position information is uploaded to the EO to perform target locking, but due to the fact that delay exists between the EO and the image transmission of the ground control system through a satellite link, errors exist between the target position determined by the ground control system and the actual target position. This position error can be compensated by adding time delay compensation means to achieve a correct locking of the target. However, the existing time delay compensation device is complex in structure and low in integration level, and cannot be directly applied to an unmanned aerial vehicle ground control system.

Disclosure of Invention

The utility model aims to provide a time delay compensation device for an unmanned aerial vehicle, which aims to solve the technical problems that the existing time delay compensation device is complex in structure, low in integration level and incapable of being directly applied to an unmanned aerial vehicle ground control system.

The utility model aims at adopting the following technical scheme: the utility model provides a time delay compensation arrangement for unmanned aerial vehicle, includes the inferior valve, be provided with time delay compensation module, video cable hole and a plurality of aviation plug wire hole on the inferior valve, the video cable is connected with time delay compensation module through video cable hole, and aviation plug wire cable is connected with time delay compensation module through aviation plug wire hole respectively, aviation plug wire cable includes communication cable, maintenance cable and power cable.

Further, a plurality of mounting holes are formed in the lower shell.

Further, a plurality of screw assemblies for fixing the delay compensation module are further arranged on the lower shell.

Further, a conductive adhesive tape is arranged between the time delay compensation module and the lower shell.

Further, the video cable hole is arranged on the lower shell through the video cable hole mounting plate, the aviation plug wire hole is arranged on the lower shell through the aviation plug wire hole mounting plate, and the conductive square rubber pad is arranged between the video cable hole and the video cable hole mounting plate and between the aviation plug wire hole and the aviation plug wire hole mounting plate.

Further, an SMA sleeve, a flat gasket and a light spring pad for fixing the video cable are arranged in the video cable hole.

Further, the video cable hole mounting plate and the aviation plug wire hole mounting plate are both fixed on the lower shell through screw assemblies.

Further, a cover plate is fixed on the lower shell through countersunk screws.

Further, a plurality of heat conduction pads are arranged between the cover plate and the time delay compensation module.

Furthermore, the delay compensation module adopts a processor with a DSP+FPGA architecture, and the DSP and the FPGA are interconnected through an SPI bus.

The utility model has the beneficial effects that: the utility model is arranged in the unmanned aerial vehicle body for use, and needs to meet the requirements of light weight and small structural size, and in order to meet the requirements, the circuit board in the unmanned aerial vehicle body is installed in a staggered manner, so that enough space is provided for the circuit board, the whole structural size is reduced, the whole unmanned aerial vehicle body is compact in structure, reasonable in layout, small in size and light in weight, and has higher practicability.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a de-coverplate structure of the present utility model;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a cross-sectional view taken along line B-B of FIG. 1;

FIG. 4 is a schematic view of the mounting structure of FIG. 2;

FIG. 5 is a cross-sectional view taken along line C-C of FIG. 4;

FIG. 6 is a section view D-D of FIG. 5;

FIG. 7 is a schematic diagram of the overall structure of the present utility model;

FIG. 8 is a schematic diagram of a delay compensation module;

FIG. 9 is a schematic diagram of an external interface of the delay compensation module;

in the figure, the 1-time delay compensation module, the 2-video cable, the 3-aviation plug wire hole, the 4-lower shell, the 5-mounting hole, the 6-screw assembly, the 7-conductive adhesive tape, the 8-video cable hole, the 9-conductive square disc rubber pad, the 10-SMA sleeve, the 11-flat gasket, the 12-light spring pad, the 13-video cable hole mounting plate, the 14-aviation plug wire hole mounting plate, the 15-heat conducting pad, the 16-cover plate, the 17-countersunk head screw and the 18-adhesive.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

Some embodiments of the present utility model are described in detail below with reference to the accompanying drawings. The following embodiments and features of the embodiments may be combined with each other without conflict.

Example 1:

referring to fig. 1 to 7, a time delay compensation device for an unmanned aerial vehicle comprises a lower shell 4, wherein a time delay compensation module 1, a video cable hole 8 and four aviation plug wire holes 3 are arranged on the lower shell 4, a video cable 2 is connected with the time delay compensation module 1 through the video cable hole 8, aviation plug wire cables are respectively connected with the time delay compensation module 1 through the aviation plug wire holes 3, and the aviation plug wire cables comprise a communication cable, a maintenance cable and a power cable.

In this embodiment, four mounting holes 5 are provided on the lower case 4 and are respectively located at four corners of the lower case 4, a plurality of screw assemblies 6 for fixing the delay compensation module 1 are further provided on the lower case 4, and a conductive adhesive tape 7 is further provided between the delay compensation module 1 and the lower case 4.

In the present embodiment, the video cable hole 8 is disposed on the lower shell 4 through the video cable hole mounting plate 13, the aviation plug wire hole 3 is disposed on the lower shell 4 through the aviation plug wire hole mounting plate 14, and conductive square disc rubber pads 9 are disposed between the video cable hole 8 and the video cable hole mounting plate 13, and between the aviation plug wire hole 3 and the aviation plug wire hole mounting plate 14, and an SMA sleeve 10, a flat washer 11 and a light spring pad 12 for fixing the video cable 2 are disposed in the video cable hole 8. Further, the video cable hole mounting plate 13 and the aviation plug wire hole mounting plate 14 are fixed on the lower shell 4 through the screw assembly 6.

In this embodiment, the lower case 4 is fixed with a cover plate 16 by a countersunk head screw 17, the countersunk head screw 17 needs a sealing compound 18, and a plurality of heat conducting pads 15 are disposed between the cover plate 16 and the delay compensation module 1.

Referring to fig. 8, the delay compensation module 1 adopts a processor with a DSP (digital signal processor) +fpga (field programmable gate array) architecture, wherein the DSP adopts an 8-core 1GHz floating point processor, 1600 hundred million floating point operations or 3200 hundred million fixed point operations can be performed per second, each core has a 512KB cache, and 8 cores share a 4MB on-chip cache, so that the instantaneity of an image target detection and tracking algorithm can be satisfied. The FPGA adopts XILINX Spartan 6 series FPGA and adopts a programmable logic device wiring mode to realize the functions of signal acquisition, communication and the like. The DSP and the FPGA are interconnected through an SRIO interface. SRIO is an interconnection system structure which is advocated by companies such as Motorola, mercury and the like and has high performance, low pin count and data packet exchange, and the SRIO can provide a communication rate of up to 20Gbps and can meet the real-time interaction requirement of video data between the DSP and the FPGA. The DSP and the FPGA are also interconnected through an SPI bus, so that the control information interaction requirement between the DSP and the FPGA can be met.

The DSP is connected with DDR3 through a 64bit DDR3 interface, the DDR3 capacity is 512MB, and the DDR3 is used for storing all video frames from the time t (ground observation time) to the time t+delta t, and the capacity of caching the video frames for more than 5 seconds is provided. The method comprises the steps that FLASH is connected through an external memory interface, first frame and last frame image data in the execution process of each time delay compensation task are stored, after the execution of the task is finished, ground test equipment can conveniently read images stored in the FLASH, and whether the time delay compensation task is successful or not is detected; the FLASH capacity is 1GB, and can store 500 images of the delay compensation task. The DSP is also connected to a 128KB EEPROM via the SPI bus for storing system initialization parameters.

The FPGA plug-in DDR3 and FLASH, wherein the DDR3 is used for storing video images, and the FLASH is used for storing FPGA firmware programs. The FPGA is responsible for managing 5 RS422 interfaces communicated with the MC, ku/Ka beyond-line-of-sight link airborne terminal, the C beyond-line-of-sight link airborne terminal and the communication relay link airborne terminal, and achieves the functions of format conversion, packet transmission, unpacking and distribution of messages among the RS422 interfaces.

Referring to fig. 9, the external interface of the delay compensation module is functionally divided into a video interface, a communication interface, a power interface and a maintenance interface (corresponding to aviation plug wire holes 3 respectively), wherein the video interface is connected with the video cable 2, the communication interface is connected with the communication cable, the power interface is connected with the power cable, and the maintenance interface is connected with the maintenance cable. The delay compensation module receives one path of HD-SDI video signal from EO, and outputs two paths of identical LVDS digital video signals based on CAMERA-LINK BASE to the Ku/Ka over-the-horizon LINK airborne terminal and the C-horizon LINK airborne terminal. The time delay compensation module is communicated with the communication relay link airborne terminal through the RS422, wherein one RS422 transmits a radio station control signal, and the other RS422 transmits a radio station service signal; and respectively communicating with a Ku/Ka beyond line-of-sight link airborne terminal, a C line-of-sight link airborne terminal and MC (task computer) through RS 422. The delay compensation module may be powered by an electrical system with 28V dc power, and by MIP (discrete amount power up) with power control to power up and down. The delay compensation module provides a maintenance interface, and is communicated with the delay compensation module ground test equipment through the gigabit Ethernet and the RS422 to complete the functions of fault detection, program updating, analog operation and the like of the delay compensation module.

The utility model has simple structure, higher integration level and stronger reliability and stability; the unmanned aerial vehicle ground control system provides various interfaces, and can meet the requirement of the unmanned aerial vehicle ground control system on accurate locking of the target position.

It should be noted that the terms "coupled," "configured," and "arranged" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying a number of technical features being indicated. Thus, features defining "connected", "arranged" may explicitly or implicitly include one or more such features. Moreover, the terms "connected," "configured," and the like are used to distinguish between similar objects and do not necessarily describe a particular order or sequence. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the utility model described herein may be implemented in sequences other than those illustrated or otherwise described herein.

In the above embodiments, the basic principle and main features of the present utility model and advantages of the present utility model are described. It will be appreciated by persons skilled in the art that the present utility model is not limited by the foregoing embodiments, but rather is shown and described in what is considered to be illustrative of the principles of the utility model, and that modifications and changes can be made by those skilled in the art without departing from the spirit and scope of the utility model, and therefore, is within the scope of the appended claims.

Claims (10)

1. A time delay compensation arrangement for unmanned aerial vehicle, its characterized in that, including inferior valve (4), be provided with delay compensation module (1), video cable hole (8) and a plurality of aviation plug wire hole (3) on inferior valve (4), video cable (2) are connected with delay compensation module (1) through video cable hole (8), and aviation plug wire cable is connected with delay compensation module (1) through aviation plug wire hole (3) respectively, aviation plug wire cable includes communication cable, maintenance cable and power cable.

2. A time delay compensation device for a drone according to claim 1, characterized in that the lower shell (4) is provided with a plurality of mounting holes (5).

3. A time delay compensation device for a drone according to claim 1, characterized in that the lower shell (4) is further provided with a plurality of screw assemblies (6) for fixing the delay compensation module (1).

4. A time delay compensation device for a drone according to claim 3, characterized in that a conductive adhesive strip (7) is also provided between the delay compensation module (1) and the lower shell (4).

5. A time delay compensation device for an unmanned aerial vehicle according to claim 1, wherein the video cable hole (8) is arranged on the lower casing (4) by a video cable hole mounting plate (13), the aviation plug wire hole (3) is arranged on the lower casing (4) by an aviation plug wire hole mounting plate (14), and a conductive square rubber pad (9) is arranged between the video cable hole (8) and the video cable hole mounting plate (13) and between the aviation plug wire hole (3) and the aviation plug wire hole mounting plate (14).

6. A time delay compensation device for a unmanned aerial vehicle according to claim 5, wherein an SMA sleeve (10) for fixing a video cable (2), a flat washer (11) and a lightweight spring pad (12) are arranged in the video cable hole (8).

7. A time delay compensation arrangement for a drone according to claim 5, characterised in that the video cable aperture mounting plate (13) and the aviation plug aperture mounting plate (14) are both secured to the lower housing (4) by means of screw assemblies (6).

8. A time delay compensation device for a unmanned aerial vehicle according to claim 1, wherein the lower shell (4) is fixed with a cover plate (16) by means of countersunk screws (17).

9. A time delay compensation device for a drone according to claim 8, characterized in that a plurality of thermal pads (15) are provided between the cover plate (16) and the delay compensation module (1).

10. The time delay compensation device for the unmanned aerial vehicle according to claim 1, wherein the time delay compensation module (1) adopts a processor of a DSP+FPGA architecture, and the DSP and the FPGA are interconnected through an SPI bus.

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