Patent ID: 11938978
Assignee: SIEMENS MOBILITY GMBH
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A grade crossing control system comprising:
a track circuit comprising a grade crossing predictor (GCP) system coupled to rails of a railroad track at a grade crossing, wherein a railroad vehicle travelling on the railroad track causes a change of impedance when entering the track circuit, and wherein the GCP system generates grade crossing activation signals in response to the change of the impedance of the track circuit,
wherein the GCP system comprises
a first transmitter transmitting a first signal over the track circuit and a first receiver detecting a first response signal,
a second transmitter transmitting a second signal over the track circuit and a second receiver detecting a second response signal,

wherein the first transmitter and the first receiver are preprogrammed to a first frequency, and wherein the second transmitter and the second receiver are preprogrammed to a second frequency, and
wherein the first transmitter and the second receiver utilize a same first electrical connection to the rails, and wherein the second transmitter and the first receiver utilize a same second electrical connection to the rails.