A Serial Distributed Analog Quantity Airborne Acquisition System

Abstract

The invention discloses a serial distributed analog quantity airborne acquisition system, which comprises an integrated control host, a bus controller and a bus interface module, wherein the integrated control host is formed by a high-performance workstation and is in communication with the bus controller through a switch; the bus controller realizes convergence and basic data processing of acquisition information of the bus interface module, and completes switch transmission and time synchronization of data through the switch; different types of sensors are additionally arranged on the bus interface module, so that signal conditioning and data acquisition of various parameters are achieved. According to the system, signal conditioning units are installed near the sensors based on an RS485bus technology, each signal conditioning unit is connected to the acquisition system through a wire, so that the cable laying number of the whole system is greatly reduced, the reliability of the system is improved, the system is suitable for being installed and tested in a narrow space, and the problems of too much testing cables, large refitting workload, complex penetrating coordination and the like of a large-scale civil aircraft are effectively solved.

Description

technical field [0001] The invention belongs to the field of flight tests, and in particular relates to a serial distributed analog airborne acquisition system. Background technique [0002] Flight test is an indispensable and important link in the development of aviation equipment and civil aircraft. It is a process of testing aircraft, airborne equipment or equipment in a real flight environment. It has high risk, long cycle, large investment, and exploration. The purpose of the flight test is to verify the theory and the results of the ground test, and to identify the design indicators, airworthiness and performance of the aircraft. [0003] In the flight test, a large number of parameters need to be measured, involving altitude, speed, pressure, temperature, force, vibration, overload, attitude, displacement, angular velocity, flow, angle of attack, sideslip angle, current (pressure), strain, noise, spatial position More than a dozen types, such as sensor layout, acquis...

AI Technical Summary

Problems solved by technology

The networked airborne test system has a certain role in promoting the reduction of cables, but it still cannot solve the problem of a large number of cables on the link from the acquisition end to the switch. Reliability requirements are high, once a failure occurs, the entire backend will not work properly

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