Abstract
A new testing method for hydrostatic piezoelectric constant, dh , was studied in this paper. This testing system consists of five parts, which are hydrostatic simulator, signal acquisition and processing circuits, data acquisition, serial communication interact circuit, data processing and display. Researched the method of signal acquisition for hydrostatic piezoelectric charge, designed the charge amplifier circuit, signal processing circuit as well as the data acquisition and serial communication interact circuit with microcomputer, programmed for the date acquisition and processing system software. The hydrostatic piezoelectric constant, dh , of piezoelectric ceramic samples were tested. The experimental results showed that this new testing method is available. The new testing system is characteristic of manipulation simply and low cost.
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