冲击波压力传感器测试系统的动态标定

Dynamic calibration of shock wave pressure measurement system

介绍压力场测试中所采用的压电压力传感器的标定方法。压力场测试中所采用的传感器是一种以压电晶体做敏感元件的压力传感器,它可以将压力讯号直接转换成电荷输出,其输出量与被测量压力成正比。该传感器具有较大的测压范围、较好的线性、快速的上升时间、高的压力-电荷灵敏度和较小的几何尺寸。给出了压电压力传感器的实验室标定方法和野外使用环境条件下的现场标定方法,并进行了对比研究。

This paper mainly introduces the calibration method of piezoelectricity pressure sensors in the pressure field testing. The sensor used in the testing is made of piezoelectricity crystal and it can directly transform the pressure signal into electricity signal. Its output is in proportion to the measured pressure. This kind of sensor has the virtue of large testing pressure range, good linearity, rapid respond, high pressure-electricity sensitivity and less geometrical size. In this paper the calibration method of piezoelectricity pressure sensor is given in the laboratory and in the open-field respectively and is studied contrastively.