Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1997-07-30
1999-12-28
Lee, Benjamin C.
Communications: electrical
Condition responsive indicating system
Specific condition
340669, 340683, 3408703, 310318, 246167R, 246182R, 73651, G08B 2100
Patent
active
060087315
ABSTRACT:
A motion detector for detecting movement of a rail based vehicle and the direction of that movement is provided. The motion detector can be integral with or attachable to an end-of-train unit and can include a single axis accelerometer mounted at an angle from the rails for detecting acceleration in both the lateral and vertical directions. A systems controller, which can include an analyzer, can be provided to receive and analyze output from the accelerometer to determine a motion state and a direction. A power controller can be provided for supplying power to the accelerometer on an intermittent basis to conserve power. A calibration unit can be provided to both initially calibrate and to subsequently recalibrate the accelerometer after a stopped motion state is detected. Additionally, an input/output port and an output driver for conditioning the signal for output to the end-of-train unit can be provided.
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Lee Benjamin C.
Radack David V.
Union Switch & Signal Inc.
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