Video monitoring system for unmanned work face of coal mine

The invention discloses a video monitoring system for an unmanned work face of a coal mine. The video monitoring system comprises a monitoring front end, a transport network and a monitoring terminal, wherein the monitoring front end comprises at least one video collection device. The video monitoring system is characterized in that the monitoring front end also comprises a bus communicated with the transport network; and the video collection devices are connected in series through an exchange board and then accessed to the bus. The video collection device has the beneficial effects that multiple monitoring point signals are transported by one cable, thereby greatly saving cable quantity and construction time and reducing system cost and construction difficulty; the system is simple in structure and is simple and convenient for maintenance and expansion, new nodes can be arranged without rewiring and can be inserted into a main cable directly; and faults can be found easily, and the system is convenient for maintenance and is simple and reliable.