Security device for monitoring a robot's working space and robot workstation with such a security device

摘要

security device for monitoring a robot's working space (1),having at least one electrically conductive floor covering (16),electrically insulated against earth, a transmitter (17) with a transmitter antenna connection (18),which is electrically connected to the floor cover (16), a signal generator (19),who is trained to generate an output signal of predetermined characteristics and to transmit it to the transmitting device (17), to radiate the output signal to the environment through the ground layer forming a transmitting antenna (16),furthermore, having an input line electrically connected to the metallic structure of a robot arm (2);which is trained to detect the output signal emitted by the ground layer (16) through the metal structure of the robot arm forming a receiving antenna (2) as an input signal, a receiving device (21),is trained to record the input signal recorded by the input line (20), a reference device connected to the receiving device (21) and the transmitter (17), andtrained to compare the input signal received by the receiving device (21) with the output signal emitted by the transmitting device (17) in order to detect a signal amplification when a person approaches the robot arm (2) and an evaluation device associated with the comparison device (22);trained according to a comparative result of the comparator (22),a safety signal indicating the safe state of the workspace for transfer to a robot control(12) Create a robot (1) to perform at least one security function.