MEASURING SYSTEM OF ACTUAL RUNNING TIME IN MARATHON RACE

摘要

PURPOSE:To measure accurately the actual running time of a marathon runner by reading a bar-code, which is formed on a reflective plate of an identifier which each runner puts on, with optical scanning and storing it in a memory in relation to a clock output. CONSTITUTION:An individual bar-code on a reflective plate 2 of an identifier 4 which a runner puts on is sweep-scanned by the laser luminous flux from a laser light source 10 in an optical device 9 provided at the start point and is read out optically. The read code due to a photoelectric converter 16 and a processing circuit 17 is used as an address to record the clock output from a clock signal generating circuit 18 in a memory 19. Similarly, the clock output at the goal is recorded in a memory 20, and the actual running time of each runner is calculated and measured accurately through a computer 21 on a basis of contents of memories 19 and 20.