System for warning dangers during operation of e.g. fork-lift truck, has portable radio frequency identification sending- and receiving- device releasing warning signal when warning device is provided in danger area of mobile machine

摘要

The system has a mobile machine (3) including radio frequency identification (RFID) transponders (5, 7, 8) and a portable RFID sending- and receiving- device (2) operated by a person (1) and releasing a warning signal by a warning device when the warning device is provided in a danger area of the mobile machine. Another RFID sending- and receiving- device (10) likewise releases a warning signal over a wireless data exchange with the former RFID sending- and receiving- device during release of the warning signal. Antennas (11, 12) are arranged in various locations in the mobile machine. An independent claim is also included for a method for operating a system for warning dangers during operation of a mobile machine. The warning device is selected from a group consisting of horn, bell, vibration device and warning light or indication on a display.