Alert device triggering video sequence recording device, has detector to sense actuation of device, and control unit to select certain stored video sequence, which starts minute before and terminates minute after actuation of device

摘要

The device has a video camera (2) that captures a video sequence of an alert device (10) e.g. emergency stop control of a train. Storage units (7) store captured video sequence in a continuous and temporary manner. A detector senses an actuation of the alert device, and a control unit selects a particular stored video sequence, which starts a minute before and terminates a minute after the actuation of the device.