Patent ID: 11938985
Assignee: SIEMENS MOBILITY GMBH
Field: Transport (Mechanical engineering)
Classification: CPC B  G | IPC B  G

Claim 0:
1. A highway grade crossing gate mechanism, comprising:
an electric motor coupled to a main shaft for driving a gate arm between a vertical position and a horizontal position;
a cam system, comprising:
a plurality of manually adjustable cams coupled to the main shaft that move contacts to open or close at some preset angular rotation in order to set operational features of a crossing gate, and
a rotational position sensor disposed internal to the cam system measuring a parameter of the gate mechanism in real time; and

a controller comprising at least one processor coupled to the electric motor and the cam system wherein the controller is configured to control the motor and receive and store the parameter of the gate mechanism,
wherein the rotational position sensor includes an accelerometer disposed on a control board,
wherein the control board is disposed on a back portion of a cam of the plurality of cams for measuring an accurate angular position of the main shaft.