Design And Study In Sonic Testing For Bomb Chamber Volume Based On Virtual Instrument

Based on the idea of "software is instrument" and the previous "Sonic Testing Instrument for Bomb Chamber Volume" and using the exclusive developing software of Virtual Instrument, we had designed the "Audio Frequency Detection Instrument of Bomb Chamber Volume based on Lab VIEW" in this thesis.The design includes two parts— Hardware (HW) design and Software (SW) design. The HW design includes the design of signal fixing circuit and the choice of sensor and the data acquisition card. The SW design includes the design of the front panel and its relevant program frame. In the SW design we adopted the idea of modularization design. The modularizations are made up of data collection, output control, data record and report frame, data and curve display and system self-diagnose etc. With the Virtual Instrument design introduces, we resolve the confine of previous instrument that can only examine single module bomb. The new system has the characteristic of high speed and high precision, it easy to upgrade SW and improve function.In the system, we realize intelligent control, real time collection of signal in time and frequency domain, result display at the same time and data analyze, Based on hardware realize, system realize testing of chamber volume.