A method for controlling a production line has radio transmitters and receivers positioned at critical points to detect the existence of an item

摘要

An I beam (1) runs along the production line with a sensing unit (2) at points of operation, comprising a coil receiver (4), a battery and charging unit (5). A proximity sensor (8) detects the arrival of an item and generates a signal sent to a central computer by a transmitter (6) and aerial (7).