关键词: ATMEGA128, 气密性, 流量法

Abstract:

An air tightness detector controlled by ATMEGA128 core is designed for the air tightness detection of a medical device parts based on the principle of flow method.Stepping motor is used to achieve automatic measurement,throttle to stable the DUT test pressure in gas path,and precision sensors to receive the changes in the gas flow path.Human-computer interaction is achieved by using Touch screen.Results of experiment show that the detection system achieves automatic detection with good accuracy and efficiency.

Key words: ATMEGA128;air tightness;flow method