Unmanned-aerial-vehicle power routing inspection use-oriented optical-fiber IMU data collection system

Abstract

The invention relates to an unmanned-aerial-vehicle power routing inspection use-oriented optical-fiber IMU data collection system. The optical-fiber IMU data collection system comprises a signal input module, a signal collection and preprocessing module and a data communication interface module. The signal input module comprises three paths of accelerometer pulse signals, three paths of gyro pulse signals and three paths of digital temperature signals, which are sent to an FPGA through an optical coupling circuit in an isolated way. The signal collection and preprocessing module is realized by an FPGA chip and a peripheral configuration circuit thereof. The gyro, accelerometer and temperature pulse signals are received in parallel, and smoothening and preprocessing of data are completed.The data communication module realizes communication with a host machine through a serial port RS422; and on the one hand, the data are packed thereby and sent to the host machine for resolving or storage, and on the other hand, time synchronization of an IMU and a GPS is realized, and reliability of the data is ensured. The invention provides the small, light and universal data collection systemwith high reliability, and the system has important practical significance on realizing integrated research and development of power line routing inspection systems based on unmanned aerial vehicles.

Description

technical field [0001] The invention relates to an optical fiber IMU data acquisition system for unmanned aerial vehicle power inspection, which can be used to design an inertial measurement unit with small volume, small weight, long life and high reliability, and is suitable for the field of aerial remote sensing, realizing high High-resolution real-time Earth observation imaging. Background technique [0002] The current operation and maintenance mode and inspection method of high-voltage transmission lines in my country's power grid rely on ground transportation or walking on foot, and use hand-held instruments or naked eyes to inspect facilities and deal with defects, which can no longer meet the needs of the development and safe operation of modern power grids. In response to the business needs of daily safety maintenance and emergency response of such high-voltage power lines, my country has carried out research on key technologies of over-the-horizon unmanned helicopt...

AI Technical Summary

Problems solved by technology

As a result, the area of ​​the data acquisition board is 102mm×74mm, which restricts the design of the IMU structure and increases its weight

At the same time, the acquisition board is equipped with too many chips and circuits, which increases its power consumption and weight, resulting in a high probability of electromagnetic interference and reduced reliability.

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