GDT-I rail transit laser detection alarm system and method and storage medium

The invention discloses a GDT-I rail transit laser detection alarm system and method and a storage medium, and relates to the technical field of subway safety monitoring. Comprising a laser radar, a defense area processor and an alarm host. Wherein the laser radar is mounted at the position of a top cover above a platform screen door and is used for detecting foreign matters on a channel between the platform screen door and a train door; the defense area processor is electrically connected with the laser radar and is used for receiving a detection signal provided by the laser radar, converting the detection signal into a relay contact signal and a data signal and transmitting the relay contact signal and the data signal to the alarm host; the alarm host is electrically connected with the defense area processor, and is used for processing relay contact signals and data signals from the defense area processor, and carrying out sound-light alarm. The laser radar is adopted for foreign matter detection, the false