METHOD AND DEVICE FOR MEASURING THE SPEED OF A ROLLING STOCK

摘要

The method involves transmitting electromagnetic waves (6) in a microwave region to a roller stock i.e. metal roller strip (1), by a transmitting and receiving device (3). A strip speed is determined from a reflected and received reflection signal in an evaluation device (11). Electromagnetic radiation aligned on reflected surfaces (4) of the roller stock is produced by the transmitting and receiving device, where the surfaces lie at distance to each other in a line (13) parallel to a movement direction (12). The reflection signal is formed from a portion reflected from the surfaces. Independent claims are also included for the following: (1) a device for determining strip speed of a roller stock (2) a method for driving a rolling mill for producing a roller strip.