Rail transit vehicle monitoring device

The utility model belongs to the field of monitoring equipment, and particularly relates to a rail transit vehicle monitoring device. The system comprises a monitoring host and a transparent lens protection cover arranged in front of a lens of the monitoring host. An electromagnet is arranged below the transparent lens protective cover; a magnetic movable brush capable of moving up and down is arranged in front of the transparent lens protective cover, a permanent magnet is arranged in the magnetic movable brush, the magnetism of the electromagnet after being powered on and the magnetism of the permanent magnet in the magnetic movable brush are the same, the magnetic movable brush moves up and down through power-on and power-off of the electromagnet, and therefore cleaning of the transparent lens protective cover is achieved. By arranging the electromagnet and the magnetic movable brush with the permanent magnet and intermittently supplying power to the electromagnet, the magnetic movable brush can brush up a