METHOD TO DETERMINE POSITION OF SWITCH POINTS Russian patent published in 2006 - IPC B61L5/10 

FIELD: railway transport; traffic control.

SUBSTANCE: position pf points is checked from board of rail vehicle. When rail train approaches switch section, its approach is detected. On switch approach section current orientation of three-dimensional movable system of coordinates rigidly coupled with rail train is recorded. Changes of position of three-dimensional system of coordinates of rail train during time of movement along switch section relative to its initial orientation recorded at moment of approaching switch section are tracked and determined. Then measured values of angles of turning of movable system of coordinates are compared with previously determined values of angles for plus and minus positions of switch points and, basing on results of comparing, actual position of switch points is determined.

EFFECT: increased safety of traffic.

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