本文介绍了采用光一电原理测试泡沫柱中气泡尺寸及含气率的测试方法及装置。该法采用一对红光发射对管作传感器，数据采集采用单片机，一次可采集10000个气泡。通过计算机进行数据处理，可获得气泡的平均直径、气泡分布及含气率。用该法测试具有迅速、准确、适应范围广的特点。 This paper presents a test method and apparatus for testing bubble size and gas content in a foam column using a photo-electric principle. The method uses a pair of red light-emitting tube as a sensor, the data acquisition using a single chip, a collection of 10,000 bubbles. Data processing through the computer, you can get the average bubble diameter, bubble distribution and gas content. Test with the law with rapid, accurate, wide range of adaptation features.