Method for controlling driverless transport systems

摘要

A method is specified for controlling driverless transport systems, a plurality of driverless transport systems being operated in an installation. These driverless transport systems are equipped with ultrasonic distance sensors for the detection of obstacles, which detect the distance of an obstacle on the basis of the transit time between a transmitted ultrasonic signal and an echo signal reflected from the obstacle and, in the case of undershooting a safety distance, the corresponding transport system is stopped. On the basis of the known intrinsic speed of the driverless transport system, a decision is made as to whether an echo signal is a passive echo signal reflected from an obstacle or an active transmitter signal transmitted by another driverless transport system. All transport systems are provided with different priorities (n = 0, 1, 2, 3...) and each priority has assigned to it a multiple of a device-specific waiting time (n.tOR), for which the operation of the driverless transport system is stopped when an active disturbing echo is received by the relevant transport system.