Abstract: A new online detection system for bottled beers was presented. The volume of beer was determined by detecting real-time the height of beer in the bottle. The system is mainly used to examine online whether the volume of beer meets the requirements. The system consists of high-speed image sensors with window functions and DSP. The developed software provides a boundary detection algorithm to detect liquid level. The system holds the following features:high detection rate, that is, each bottle detection time is less than 50 ms|nonsensibility to the external lighting and bubbles in bottles|saving photoelectric sensors because of the use of image processing technology positioning beer bottles|small volume, easy to install in the fields.

Key words: Beer, Volume, Visual inspection, DSP, Image sensor

摘要： 给出一种新开发的瓶装啤酒在线检测系统，通过实时检测瓶内啤酒的高度来判断体积，主要用于在线检测生产线啤酒瓶内体积是否达到要求。该系统由具有开窗功能的高速图像传感器和DSP等组成，软件上提出了一种专门用于检测液位的边界检测算法。该系统特点在于具有很高的检测速度，每瓶检测时间小于50 ms；对外部光线和瓶内泡沫不敏感；利用图象处理技术定位啤酒瓶位置，节省了用于定位的光电传感器；体积小，便于现场安装。

关键词: 啤酒, 体积, 视觉检测, DSP, 图像传感器