Abstract: Provided is a monitoring system that can find abnormality in a device that supports a vehicle body of a railway vehicle during running at an early stage. The monitoring system for the railway vehicle includes a detector and a determiner. The detector detects a pressure A1 of a first air spring, a pressure A2 of a second air spring, a pressure A3 of a third air spring, and a pressure A4 of a fourth air spring of the railway vehicle during running. The first, second, third, and fourth air springs are respectively disposed on right front, left front, right rear, and left rear sides in a running direction of the railway vehicle. The determiner determines abnormality from a relation between a magnitude of diagonal imbalance P obtained from a formula (1) or (2) below and a mileage or elapsed time of the railway vehicle.

Abstract: Provided is a monitoring system that can find abnormality in a device that supports a vehicle body of a railway vehicle during running at an early stage. The monitoring system for the railway vehicle includes a detector and a determiner. The detector detects a pressure A1 of a first air spring, a pressure A2 of a second air spring, a pressure A3 of a third air spring, and a pressure A4 of a fourth air spring of the railway vehicle during running. The first, second, third, and fourth air springs are respectively disposed on right front, left front, right rear, and left rear sides in a running direction of the railway vehicle. The determiner determines abnormality from a relation between a magnitude of diagonal imbalance P obtained from a formula (1) or (2) below and a mileage or elapsed time of the railway vehicle.