Patent ID: 8989926
Filing Date: 2015-03-24
Classification: B61L,E01B

Abstract:
1. A railroad signaling and communication system for verifying trackside conditions which are used to control train movement in safety critical railroad. applications comprising: a voltage sensor for providing trackside conditions to a remote train control system; said voltage sensor having a low power microprocessor and a two-way electronic communication means for communicating with the remote train control system; and said voltage sensor being electrically connected to a trackside circuit for providing trackside conditions to a railroad interlocking, said circuit comprising a power supply, the interlocking, and a trackside signaling electrical component, said sensor being electrically intermediate to said electrical component and said interlocking to sense the voltage between said electrical component and said interlocking, said circuit energized when said electrical component is engaged, said sensor powered by voltage applied to said circuit such that said sensor is energized only when said electrical component is engaged.