| 摘要 |
A mechanical plant 100 has a controllable movable element 106 such as an auger, drill string, bucket or hopper. A safety system uses a camera 120 mounted to the mechanical plant to generate an image of a region 140 near to the controllable element. The processor 122 is configured to determine, based on the image of the region, the presence of a hazard 142 (e.g. person) in the region, and output a signal indicative of the presence of the hazard, preferably as an indication on a user interface 130. The camera is ideally mounted in an elevated position, and may generate a plurality of images where the presence of the hazard is determined by comparing two or more image to identify movement. The presence of a hazard may also be determined by analysing the footprint of an object in the image(s). The system may employ a plurality of cameras to cover many regions around the plant, each image received from each of the cameras being displayed on the UI. The controllable element may be deactivated following the detection of a hazard, preferably after a delay. |
