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Aiming at the problem of traditional nondestructive testing, Ultrasonic testing system based on Virtual Instrument was designed. The hardware platform is the signal source which is based on microcontroller, and the HS4 data acquisition card by USB bus. The software platform adopting the LabVIEW to program, using the multithread to acquire all kinds of signal by real-time. The nondestructive feature...
The objective of this work is the design of virtual instrument software system based on state machine. Through the introduction of the basic principles of it, state machine described in detail the working mechanism and its implementation in LabVIEW, combined with the a test system. With the development of practice, for the multi-state system, the nested state machine design-type thinking. Practice...
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