Patent ID: 11884165
Assignee: HITACHI, LTD.
Field: Transport (Mechanical engineering)
Classification: CPC B  G  Y | IPC B

Claim 0:
1. A system configured to monitor an arc between an overhead line and a pantograph of an electric vehicle, the pantograph collecting current for the electric vehicle from the overhead line, the system comprising:
a magnetic field detector configured to detect a change in a magnetic field generated by the arc; and
a first processor configured to determine a horizontal position of the arc on the pantograph, and output first data that describes the horizontal position, an occurrence time of the arc, and an intensity of the arc, wherein
the magnetic field detector is disposed adjacent to the pantograph, and
the first processor is disposed in the electric vehicle,
wherein the magnetic field detector includes two shield loop antennas, and
wherein the first processor is configured to determine the horizontal position by using a tilt of the shield loop antenna with respect to the pantograph, a first antenna signal received by a first shield loop antenna when the arc occurs, and a second antenna signal received by a second shield loop antenna when the arc occurs, so as to determine an angular position with respect to the arc from the shield loop antenna.