Ethernet-based Aircraft Electrical Parameter Test System Design

The combination of network technology and test technology of buses results in the appearance of a new test system, networked test system.Test information could be obtained by networked test system conveniently. So it will improve the test efficiency evidently, decrease the test cost effectively, and shorten the test and measurement periods enormously. Test and measurement with networked test system is an important developing direction of the automatic test system.This paper takes test system of certain type airplane for ground experimentation as the background, analyzes the networked frame of test system for aircraft electric power parameter, studies the synchronization principle of double chest, PXI data acquisition and load control methods, introduces the method how to realize controlling remotely via Ethernet. According to GJB181-1986 and GJB181A-2003, calculational methods of parameters are introduced and the software designing is given with Lab VIEW programming technology. Using hierarchy and module method, the system accomplished test electric power parameters and deploying load, and realized monitoring the scene and controlling the load remotely.Finally, considering the new developing trend of testing technology, some test methods that will be improved or completed is presented in this paper.