罐头真空度的声频测试法

SOUND FREQUENCY TESTING OF CAN VACUITY

本文给出一种新的声频法测试罐头真空度的无损检测系统，介绍其检测原理和检测电路，并对其性能做了分析。该系统具有结构简单、精度高、易于实现自动化等优点。

A nondestructive measure system of can vacuity by means of sound frequency testing isdeveloped, Its principle and circuitry are presented。Its performance is analysed。It has theadvantage of simple structure and high accuracy.Its eutomation is easy to realize。