A data acquisition method and equipment for an airplane test hydraulic system of a passenger plane

Abstract

The invention relates to the technical field of aviation measurement and control, and provides a data acquisition method and equipment for an airplane test hydraulic system of a passenger plane. The method comprises the steps that a clock synchronization network completes clock synchronization of a test terminal, a test server and a test management system; The test server issues a test configuration file through the gigabit Ethernet; The test sensor, the airborne bus and the system sensor collect parameters of a hydraulic system at the same time, and distribute collected signals to the signalconditioner through the signal transfer box, the straight-through signal distributor and the isolation signal distributor to complete signal conditioning. The conditioning signal and the straight-through signal are transmitted to the test terminal and are uniformly converted into test data; the non-real-time data in the test data is transmitted through the gigabit Ethernet; And real-time data in the test data is transmitted through the optical fiber reflection memory network. The embodiment of the invention has the characteristics of distributed acquisition, easiness in expansion, high real-time performance and high clock synchronization precision, and is suitable for data acquisition of a large-passenger aircraft iron bird test hydraulic system.

Description

technical field [0001] The invention relates to the technical field of aviation measurement and control, in particular to a data acquisition method and equipment for a hydraulic system of a large passenger aircraft iron bird test. Background technique [0002] The development of an aircraft requires a large number of ground tests, and the iron bird test is an important ground test project to verify the technical status of the aircraft before its first flight. The test of the aircraft hydraulic system needs to build an iron bird test bed, and the data in the test process needs to be displayed, processed and recorded by special data acquisition equipment. Different types of aircraft will have differences in the design of the airborne system. Among them, the sensor type of the hydraulic system, the number of channels collected, the sampling rate, the collection accuracy, and the data processing and storage methods will all have new requirements. New requirements were also intr...

AI Technical Summary

Problems solved by technology

[0003] The traditional data acquisition method of the aircraft iron bird test hydraulic system uses a single acquisition controller, the number of acquisition channels is not easy to expand, and the distance from the test point to the acquisition controller cannot be too long, which is not suitable for large aircraft airborne equipment. The test points are scattered and the distance is long. At the same time, the test software uses a non-real-time operating system, and the data processing is not timely enough. For the test of large aircraft, there will be disadvantages such as low data sampling rate, long processing cycle, and less detailed data.

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