On-line and off-line judgment method and device for distinguishing channels of visual monitoring device

The invention relates to the technical field of power transmission line on-line monitoring, in particular to an on-line and off-line judgment method and device for channel distinguishing of a visual monitoring device. The method comprises the following steps: acquiring an equipment model of a visual monitoring device; if the visual monitoring device is provided with a photosensitive sensor, acquiring a photographing interval, final photographing time and current time of the visual monitoring device, and determining an offline state of the device; if the visual monitoring device is not provided with the photosensitive sensor, obtaining the last photographing time and the current time of the visual monitoring device, the camera channel needing to work at present and the photographing interval, the photographing starting time and the photographing ending time of the camera channel, and determining the offline state of the camera channel needing to work at present; if the device or the camera channel needing to w