An automatic detection device for electrical system circuit of aero-engine

Abstract

The invention provides an automatic detection device for electrical system circuits of aeroengines. The device includes a detection mechanical part, a main control part and a detection circuit part. The detection mechanical part includes a casing (6), the casing (6) is hollow, and the casing (6) There are two unipolar multi-channel mechanical switches (3) and two bipolar multi-channel mechanical switches (4), and the unipolar multi-channel mechanical switches (3) and bipolar multi-channel mechanical switches (4) are fixed on the housing (6) on the bracket (2). The automatic detection device for the electrical circuit of the aeroengine provided by the invention is designed with a reasonable mechanical automatic switch, has a simple and compact structure, and designs a multifunctional automatic detection circuit in combination with the detection experience of the electrical system. It can realize the automatic detection of the electrical system on the aero-engine test bench, and can ensure good test accuracy and test efficiency, and has a good application effect in the aero-engine test.

Description

technical field [0001] The invention belongs to the field of aero-engine testing, and in particular relates to an automatic detection device for electrical system circuits of an aero-engine Background technique [0002] With the advancement of technology, the aero-engine control system has developed into an ESC and full-authority digital control system, and its electrical accessories and circuits have gradually increased. The aeroengine electrical system circuit is a neural network that connects controllers, onboard sensors / electrical accessories, and control systems to provide power, control signals, and data information for each component of the engine. Through certain technical means to detect the electrical system circuit, most of the electrical logic faults of the bench electrical and engine accessory equipment can be found in advance. Therefore, the key link of aeroengine electrical system circuit detection has been highly valued by all parties. [0003] At present, ...

AI Technical Summary

Problems solved by technology

[0005] 1) The function is relatively simple. Some instruments have the functions of point-to-point continuity, insulation and voltage resistance detection of cables, but they often do not have the functions of cable connection correspondence, resistance detection and switch value detection of airborne accessories. , unable to fully meet the requirements of the inspection procedure before the aero-engine test;

[0006] 2) In special fields such as aero-engines, high-precision and high-reliability detection devices are required. However, detection devices using electronic analog switches on the market have relatively large on-resistance, generally ranging from a few ohms to tens of ohms, which introduces measurement errors; And the integrated multi-channel analog switch has limited working voltage, which is not suitable for insulation and withstand voltage testing;

[0007] 3) On the other hand, due to the large amount of test data (usually the number of cables is as many as hundreds of cores), the equipment using the relay array is bulky, which increases the size and weight of the test system, and secondly, the relay needs to drive the circuit, which will increase the circuit. The complexity reduces the reliability of the system; moreover, when the relay is working, it is caused by switching noise and high power consumption

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