Patent ID: 6353314
Filing Date: 2002-03-05
Classification: B60T,G01B,G01D,Y10T

Abstract:
A travel sensor for detecting an absolute value of a travel of a mechanical component or a travel change, the travel sensor comprising a rotatable circular sensor element having a circumference; a magnetic field detector positioned proximate said sensor element; and a mechanical device arranged so that a longitudinal motion of the mechanical component is convertable with said mechanical device into a rotary motion of said sensor element, said mechanical device being formed as a Bowden cable which is acted upon by the longitudinal motion of the mechanical component to be detected and is retained on said circumference of said circular sensor element so as to be wound up onto and wound from said circular sensor element, said sensor element carrying a dipole permanent magnet whose field lines as a function of its rotary position intersect said detector in different directions, so that in operation an unambiguous angle signal is present at an output of said detector.