基于声学原理的啤酒瓶在线内压力检测系统设计

On--line Inspection System Design for Beer Bottle Intrinsic Pressure Based on Acoustic Principles

为保证瓶装啤酒的品质，需对其内压力性进行在线检测；设计了一种基于磁脉冲激励发声技术的啤酒瓶内压力检测系统，对啤酒瓶内压力进行非接触检测，不影响啤酒品质，成本与国外产品相比大幅下降（约为1／3）；采用中文人机操作界面，使用方便；实验结果表明，该系统检测的正确率达到100％，速度可达1400瓶／分钟。

In order to guarantee the quality of bottled beer, it is necessary to make on--line inspection for its intrinsic pressure. This the- sis, based on magnetic pulse excitation vocal technique, introduces a design of inspection system for intrinsic pressure of a beer bottle to con- duct physical testing for intrinsic pressure of a beer bottle, thus not affect the quality of the beer, as a result, the cost, compared with foreign products, decreased significantly （about one thirds）. The Chinese man--machine interface shall be applied, which is easy to use. The result of the experiment shows that the accurate rate of the inspection system could reach 100%, and the speed could up to 1400 bottles per minute.