A Design of Metrological Verification System for Some Missile Based on Virtual Instrument Technology

摘要

Metrological verification is one of the necessary methods to ensure the accuracy of normal character parameters for missile as well as it is technology performance. In this paper, a metrological verification system for electronics parameters of some missile is built by virtual instrument technology, which is based on PXI bus. Firstly, the metrological requirements are analyzed to the missile, which are about five parameters (voltage, current, resistance, frequency and phase). Secondly, according to the requirements the hardware modules of NI products are selected. Thirdly, from top to bottom method is used to design software, the graph of layer structure is built, the programming modules are divided, the LabVIEW and Visual Basic programming language are used to do this program. At last, how to select the system hardware combined with the measure uncertainty theory, and how to measure phase are described on emphasis.