Offside detection system for football, comprises two pairs of transmitters and receivers assigned to both teams

摘要

Striking of the ball is detected by two transmitters, a first transmitter for a team A and a second transmitter for a team B, the first transmitter being designed to send a signal to a first receiver and the second transmitter being designed to send a signal to a second receiver when a player is located in an offside position. If either of these receives a signal from the respective transmitter, an active or passive warning is triggered.