Data collection and transmission system for vibration test

This paper describes the vibration data collection and transmission system constructed using a pair of optical fiber signal transmission systems. One is a plastic optical fiber transmission system having a capability to correct error in transmitting vibration data through a movable plastic optical fiber. The transmission system was used to transmit vibration data from the noncontact vibration sensor attached to the robot arm to the robot basement through the plastic optical fiber installed in the robot arm. The other is a full duplex GI optical fiber transmission system, which was used to simultaneously transmit control data for shifting the position of the vibration sensor, a video signal for specifying the measuring position, and measured vibration data through a GI optical fiber. Since the scanning of the position of the vibration sensor was controlled by control data which was transmitted from the monitoring console room to the testing machine room during the scanning of the vibration sensor position, vibration of the components mounted on the device under test was satisfactorily read from the vibration sensor.