LI Huan, ZHANG Quan-fa, LUO Yu, et al. Design of signals acquisition and processing system for multi-channel QCM[J]. 2009, 28(11): 83-85+88. DOI: 10.13873/j.1000-97872009.11.034.
To extract potential information from quartz crystal microbalance(QCM)signals
a high speed AD sampling board PCI8002 is used to translate the analog beat-frequency signals of multi-channel QCM into digital signals
and a program is developed by Visual C++ 6.0 to analyze the digital signals.After a complex processing upon a large group of sampled data
high precision vibration frequency of each channel can be obtained accurately
and the voltage amplitude and other parameters can be obtained at the same time.Thus this kind of system might provide the basis for property analysis of materials.