There are two types of technology generally used for train detection, a track circuit or an axle counter.
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A track circuit itself is an electrical system that detects the absence of a train on a section of track. This information then helps the signalling system know if it's safe for another train to proceed.
Magnetic Sensors in Public Transportation ApplicationsPublic buses, trains, trolleys, subways, gondolas and chairlifts all utilize magnetic sensors for monitoring engine speed, wheel speed, camsghaft and crankshaft positions for ensuring vehicles are running smoothly and for operators monitoring speed.
A defect detector is a device used on railroads to detect axle and signal problems in passing trains. The detectors are normally integrated into the tracks and often include sensors to detect several different kinds of problems that could occur.
A defect detector is a device used on railroads to detect axle and signal problems in passing trains. The detectors are normally integrated into the tracks and often include sensors to detect several different kinds of problems that could occur.