Portable GJB-289A test equipment, test method and fault detection method

Abstract

The invention relates to the technical field of aviation airborne bus electronic measurement and control, in particular to portable GJB-289A test equipment, a test method and a fault detection method, and the test equipment comprises a hardware system and a software system. The hardware system comprises a main control computer, a high-speed channel switching module, an oscilloscope module, a universal meter module and a GJB-289A bus signal module, wherein the high-speed channel switching module, the oscilloscope module, the universal meter module and the GJB-289A bus signal module are connected with the main control computer through a USB bus. The high-speed channel switching module is connected with a GJB-289A bus network test port; the software system comprises a test main program, a test configuration library module, a test result storage module, a bottom equipment driving module and a fault injection detection module. According to the invention, multiplexing of test resources is realized on hardware through the high-speed channel switching module; the data traceability is realized; the equipment and the method have relatively high universality and expandability; GJB-289A automatic testing and manual testing are achieved, the manual testing can conduct single-time or multi-time testing on the port, the fault information is injected, and rapid fault positioning and searching are achieved.

Description

technical field [0001] The invention relates to the technical field of aviation airborne bus electronic measurement and control, in particular to a portable GJB-289A test device, a test method and a fault detection method. Background technique [0002] With the increasing degree of aviation mechanical and electrical integration, as the preferred data bus for current airborne electronic equipment, the status of GJB-289A bus has become increasingly prominent, and it has been widely used in aerospace, maritime weapons, ground weapons and other fields. The GJB-289A bus cable network consists of a variety of components (including cables, couplers, terminal resistors, connecting plugs, etc.) and a large number (a set of cables can have as many as 32 nodes and contain dozens of components). The complex structural composition of the cable network requires that it must undergo strict and scientific testing before it can be assembled into the target system. The reliability of the GJB...

AI Technical Summary

Problems solved by technology

However, the test function of this technology is not perfect, and it is impossible to realize the complete function test and fault detection of the bus

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