地铁屏蔽门与车门间异物自动检测技术

目前，国内地铁大都由司机瞭望车尾处光带是否完整来判断车门与屏蔽门之间空隙是否存在异物，该方法误检率高。本文结合地铁车门与屏蔽门之间空隙的特点，从系统性能、安装维护等方面详细比较了目前可能用于地铁屏蔽门与列车之间异物自动检测技术，提出了基于机器视觉的地铁屏蔽门与车门间异物自动检测方法。试验结果证明，该方法具有检测准确率高、设备体积小、安装维护简单、成本低等特点，应用前景广阔。

Automatic foreign object detection technology between PSD and subway doors

Drivers always determine whether there is a foreign object between the door and the platform screen door(PSD) through checking the light bar’s completeness in the rear of the subway at Chinese subway. However, there is a big risk of false positives. Based on the characteristics of the gap between the subway door and PSD, the article made a detailed comparison of different foreign object automatic detection from the system performance, installation and maintenance, etc., proposed self-detection method based on machine vision between PSD and the door foreign object. Experimental results showed that the method was with the properties of high detection rate, the equipment was small, simple for installation and maintenance, and low cost.