Methods and system of automating track circuit calibration

摘要

A method for calibrating a track circuit is provided. The track circuit includes a transmit processing unit, a receive processing unit, and a plurality of rails coupled in series to form a track section having a first end and a second end. The transmit processing unit is coupled to the track section adjacent the first end. The receive processing unit is coupled to the track section adjacent the second end. The method includes operating the transmit processing unit so that a first voltage is applied to the track section, operating the receive processing unit to detect a first current signal, and if a parameter of the first current signal is not within a predetermined acceptable range, then communicating with the transmit processing unit so that the transmit processing unit applies a second voltage to the track section, the second voltage having a different magnitude than the first voltage.

主权项

1. A method for calibrating a track circuit defined between a transmit processing unit and a receive processing unit, the transmit and processing units coupled at respective first and second ends of a track section, the method comprising:
applying a first voltage to the track section by the transmit processing unit; receiving by the receive processing unit a first current related to the first voltage and a leakage resistance of ballast of the track section between the first end and the second end of the track section; transmitting from the receive processing unit to the transmit processing unit a communication corresponding to a status of the leakage resistance, the communication including a pulse pair signal; and adjusting the first voltage based on the communication.