Patent ID: 6323785
Filing Date: 2001-11-27
Classification: B61L

Abstract:
A transportable warning system for notification of the approach of a track guided train to a temporary work area perimeter, said system having:at least one gate, each of said at least one gate having:a master sensor, said master sensor being contained within a protective casing having securing means, said securing means removably affixing said master sensor to a stationary object proximate a track for guiding a train, and being in a position such to enable said master sensor to register predetermined data, said predetermined data including at least track activity, speed, direction of activity or no track activity, said master sensor transmitting signals, in predetermined repetition, said signals containing said predetermined data;a collection member, said collection member receiving the sensor signals containing said predetermined data for transmission;data transmitting means, said data transmitting means transmitting said signals, in predetermined repetition, from said collection member to a remote receiving member;a first antenna, said first antenna transmitting said signals;an annunciator, said annunciator having:at least a second antenna to receive transmission from said first antenna,a remote receiving member to receive the collection member signals,a data analysis member, said data analysis member receiving and analyzing said collection member signals containing predetermined data and determining the status of said predetermined data, including that all predetermined data was received to indicate full warning system operation;transmitting means, said transmitting means sending notification of track activity to a first indicator, notification of no track activity to a second indicator and full warning system operation to a third indicator;wherein continued activation of said second indicator indicates that said perimeter is safe and activation of said first indicator indicates track activity and that said perimeter is unsafe and a change in said third indicator indicates that the system is not fully operational.