Abstract: A system includes an inspection robot comprising a lead inspection sensor providing lead inspection data, and a trailing inspection sensor; a controller, comprising: an inspection data circuit structured to interpret the lead inspection data; a sensor configuration circuit structured to determine a trailing sensor configuration change for the trailing inspection sensor in response to the lead inspection data; and a sensor operation circuit structured to adjust a trailing sensor configuration for the trailing inspection sensor in response to the trailing sensor configuration change.

Abstract: Disclosed is a rig (1) for testing an automatic underground train (2), including at least two rolling units (8) at a distance from each other, each one provided for rolling at least one wheel (6) of the train (2) thereon, each unit (8) including: a rotary inertial body (28); a motor (26) engaged with the inertial body; and a sensor (51) for the rotational speed of the inertial body; the rig also including a unit (11, 15) for controlling each of the motors (26) so as to permanently eliminate any difference in speed between the rolling units.

Abstract: Providing a track status monitoring device comprising an acceleration detection unit disposed on a railway car and detecting an acceleration at least in the axle direction among accelerations generated on a wheel of the railway car; a rail position detection unit disposed on the railway car and detecting a value indicating a position of the rail in relation to the wheel in the axle direction; an integration unit that calculates a value based on a 2nd-order integrated value of the acceleration detected by the acceleration detection unit; and a subtraction unit that counterbalances an undulating component of the wheel by subtracting a value detected by the rail position detection unit from a value calculated by the integration unit, and calculates an amount of horizontal-direction displacement of the rail.

Abstract: The twist of a railway track (36) can be measured with a vehicle which includes a frame (25). This frame (25) carries a roll sensor (40) to measure the rate of roll (w) about a longitudinal axis, and sensors (38) to monitor the variations in the relative tilt between the frame (25) and the rails (35). The signals from these sensors (38) and (40) enable the changes in cant (?c) between one instant and the next to be determined, and so the twist of the track can be calculated by summing successive changes in cant. This method of determining twist can operate at substantially any vehicle speed, and gives consistent measurements in real-time.