Abstract:In problems involving dynamic measurement, piezoelectric acceleration sensor is the core component of shock and vibration measurements; but as a power component of high internal resistance it produces a few charges. Through general measurement circuit, the charge on the piezoelectric patches leaks quickly because of the input impedance, which introduces measurement error. So an idea of adopting integrated chip TL084 to replace a large number of separate components of the charge amplifier in measurement circuit is put forward. Compared with the performance of standard charge amplifier, the design presented in this paper proves available. And it has some reference for researching the design of similar measuring system. It may be used in measurement of various dynamic force, mechanical shock and vibration. Also, it may be used in acoustics, medical science and mechanics.