Airborne helicopter vibration monitoring system

Abstract

The invention discloses an airborne helicopter vibration monitoring system. The system comprises a data acquisition device and a sensor assembly, the sensor assembly is arranged on a motion part of ahelicopter and used for measuring vibration signals of the motion part, the data acquisition device is connected with the sensor assembly and used for performing filtering and analog-to-digital conversion on analog vibration signals obtained by measurement and obtaining digital vibration signals, the data acquisition device is provided with a data memory, and the data memory is used for storing the digital vibration signals for airborne in-situ real-time analysis or analysis through transfer to a ground station. According to the system, problems of long time consumption of fault diagnosis andmaintenance of the helicopter, long preparation time of data measurement, less measuring points, incomplete data, and inconsistent historical data and test data due to the influence of sensor installation are mainly solved, and the accuracy, the integrity and the timeliness of vibration data measurement are improved.

Description

technical field [0001] The invention relates to the technical field of flight equipment monitoring, in particular to an airborne helicopter vibration monitoring system. Background technique [0002] In recent years, the application of helicopters has become more and more extensive. The flight safety guarantee, fault diagnosis and daily maintenance of helicopters is a very complicated project. During the take-off, landing and flight of the helicopter, the engine power changes greatly, the transmission parts and body structure are complex, and the vibration caused by the rotor and tail rotor is large, which makes the power and transmission parts vulnerable to damage, and the flight environment of the helicopter is complex. Ground flight accelerates wear and tear, and the resulting fatigue damage is difficult to measure by service life, and safety accidents caused by this also occur from time to time. Therefore, strengthening online monitoring and fault diagnosis of helicopter...

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Problems solved by technology

[0005] In order to solve the above-mentioned problems existing in the prior art, the present invention proposes an airborne helicopter vibration monitoring system to solve the problem of long time-consuming helicopter fault diagnosis and maintenance, long preparation time for data measurement, few measurement points, incomplete data, and testing Improve the accuracy, completeness and real-time performance of vibration data measurement due to the inconsistency between data and historical data caused by the installation of sensors

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