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Mooring unmanned aerial vehicle airborne power supply optical fiber isolation communication method and system

A technology of optical fiber isolation and communication methods, which is applied in the direction of optical fiber transmission, electrical components, and reduction of electrical interference, etc., can solve problems such as being susceptible to noise and environmental interference, affecting the normal operation of control circuits, and affecting the flight safety of drones. Fast transmission speed, improved anti-interference ability, and strong anti-interference ability

Active Publication Date: 2022-04-29
HUNAN GUOTIAN ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The onboard power supply is a DC power supply. The voltage and current detection signals at the input and output terminals, the power supply temperature monitoring and fan control signals, and the power supply overvoltage and undervoltage protection control signals are relatively weak, and are easily disturbed by noise and the environment. If there is no electrical isolation, the measurement and control signals will be interfered, which will affect the normal operation of the control circuit, and even cause damage to the detection and control circuit, affecting the flight safety of the UAV.

Method used

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  • Mooring unmanned aerial vehicle airborne power supply optical fiber isolation communication method and system
  • Mooring unmanned aerial vehicle airborne power supply optical fiber isolation communication method and system
  • Mooring unmanned aerial vehicle airborne power supply optical fiber isolation communication method and system

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Embodiment 1

[0050] Such as figure 1 As shown, it is a flow chart of a tethered UAV airborne power supply optical fiber isolation communication method provided in this embodiment. The method provided in this embodiment includes the following steps:

[0051] S1: The original serial signal data is input to the transmitter, and the transmitter receives it and converts it into parallel data, which is processed by the transmitter FPGA control module and sends out N discrete complex time-domain signals x n ;

[0052] S2: Transmitter FPGA module for N discrete complex time-domain signals x n Perform pilot insertion, periodically at each discrete complex time-domain signal x n Transmit pilot time interval P on subcarriers k ;

[0053] S3: For the data after pilot insertion, the transmitter’s parallel / serial data converter (transmitter SERDES module) converts the low-speed parallel data into high-speed serial differential digital electrical signal data, and the differential digital electrical s...

Embodiment 2

[0083] Such as figure 2 As shown, the tethered unmanned aerial vehicle airborne power supply fiber optic isolation communication system provided by the method provided in Embodiment 1 provided by this embodiment, the system includes an optical fiber transmitter as a control end and an optical fiber receiver as a monitoring end; The optical fiber transmitter includes a data access port for accessing serial data, a transmitter FPGA encoding module, a transmitter SERDES module as a parallel / serial data converter, a digital-to-analog converter, and a transmitter electrical / optical converter; the optical fiber receiver It includes a receiver serial data interface that outputs the restored original serial signal data, a receiver FPGA encoding module, a receiver SERDES module as a parallel / serial data converter, an analog-to-digital converter, and a receiver light / point conversion device; the receiver optical / electrical converter receives the optical signal converted by the transmit...

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Abstract

The invention provides a mooring unmanned aerial vehicle airborne power supply optical fiber isolation communication method and system, and the method comprises the following steps: inputting original serial signal data, converting the original serial signal data into parallel data, and transmitting N discrete complex time domain signals; pilot frequency insertion is carried out; converting the parallel data into serial data and converting the serial data into optical signals; converting the signals into parallel electric signals to obtain N discrete complex frequency domain signals Xk, and calculating to obtain a pilot frequency receiving time interval Rk corresponding to the N discrete complex frequency domain signals Xk; determining a transfer function Hk and a superposition frequency domain signal complex transfer function for transmitting frequency domain signals of the transmitter and the receiver, performing discrete Fourier transform on the N discrete complex frequency domain signals Xk to remove cyclic prefixes inserted by pilot frequencies, and obtaining received discrete complex frequency domain signals Yk, i; and performing channel equalization to obtain restored original serial signal data. The invention has the advantages of fast transmission speed, high isolation, strong anti-interference performance and good transient response.

Description

technical field [0001] The invention belongs to the technical field of power supply for unmanned aerial vehicles, and in particular relates to an optical fiber isolation communication method for an onboard power supply of a tethered unmanned aerial vehicle. Background technique [0002] At present, with the widespread application of drones, the demand for drones in various fields is also increasing day by day. For some fields that require long-term blanking operations, tethered drones emerged as the times require. The tethered UAV is a multi-rotor UAV. The existing tethered UAV is powered by a ground cable to solve the need for long-term operations. As a device powered by drones, the onboard power supply not only needs to better suppress noise interference in terms of electromagnetic compatibility, but also has strict electrical isolation performance in the input and output circuits. At the input and output ends of the signal control loop, there must be a good real-time co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/25H04B15/02H02M1/00
CPCH04B10/25H04B15/02H02M1/00Y02D30/70
Inventor 吴佳维侯帅张金易先林吴丹青罗仕清
Owner HUNAN GUOTIAN ELECTRONICS TECH CO LTD
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