公开(公告)号：EP1966025A2

公开(公告)日：2008-09-10

申请号：EP06850578.3

申请日：2006-12-11

申请人： General Electric Company, (a New York Corporation)

发明人： WELLES, Kenneth, Brakeley ,  BHOTIKA, Rahul ,  DAVENPORT, David, Michael ,  HERSHEY, John, Erik ,  MITCHELL, Robert, James ,  ANDARAWIS, Emad, Andarawis

IPC分类号： B61L17/02 ,  B61L5/10 ,  B61L5/02 ,  B61L5/12

CPC分类号： B61L5/107 ,  B61L5/02 ,  B61L5/125 ,  B61L17/023

摘要： A wireless position sensing device is provided for monitoring railyard equipment status. The device comprises a gravity sensing mechanism for sensing an angular displacement with respect to a substantially vertical line, and for generating a displacement signal upon sensing a change in angular displacement exceeding approximately 40 degrees. A processing mechanism, operatively coupled to the gravity sensing mechanism, receives the displacement signal. A radio frequency transmitter, responsive to the processing mechanism, transmits a data signal indicative of the angular displacement. The processing mechanism is programmed to activate the radio frequency transmitter upon receipt of the displacement signal. The gravity sensing mechanism is affixed, attached, or mechanically coupled to railyard equipment comprising at least one of a manually operated rail switch or a safety indicator.