Position detector
OwnerWalter Mehnert, Thomas Theilinventors
Life of this patent
Estimating the term…
Abstract
A detector for detecting movements which, in its simplest form of embodiment, has one exciter magnet: (EM) and only one individual pulse wire (FE) with one induction coil (SP1) and with a sensor (SP2, HS) for determining polarity and position of the moveable exciter magnet (EM). All information is simultaneously determined at the time (Ts), that the ferromagnetic element (FE) is triggered and remagnetized by said magnet (EM). For counting operation a further information about the last established position and polarity of the exciter magnet is used, which is stored in a nonvolatile memory (36) of an associated evaluation circuit.
Claims25
Detector for detecting movements, comprising:
- a moveable exciter magnet (EM);
- only one ferromagnetic element (FE) having Weiss regions and Bloch walls;
- an induction element (SP1) surrounding said ferromagnetic element (FE);
- a second induction element (SP2) surrounding said ferromagnetic element;
- said induction element (SP1) provides a first output (22) at time Ts when said ferromagnetic element (FE) is triggered and remagnetized by said exciter magnet (EM);
- said second induction element (SP2) provides a second output (23) substantially but not precisely simultaneously with said first output at time (Ts) when said ferromagnetic element (FE) is triggered and remagnetized by said exciter magnet (EM) without further movement of said exciter magnet (EM);
- and,
- said first (22) and second (23) outputs are shifted in time with respect to each other, said time shift and sequence of occurrence of said first (22) and second (23) outputs determines the direction in which said remagnetization of said ferromagnetic element is triggered and the polarity and position of said exciter magnet (EM).
Detector for detecting movements, comprising:
- a moveable exciter magnet (EM);
- only one ferromagnetic element (FE) having Weiss regions and Bloch walls;
- an induction element (SP) surrounding said ferromagnetic element (FE);
- a sensor element (SE) coordinated to said ferromagnetic element (FE);
- said induction element (SP) provides a first output (22) at time (Ts) when said ferromagnetic element (FE) is triggered and remagnetized by said exciter magnet (EM);
- said sensor element (SE) provides a second output (24) substantially but not precisely simultaneously with said first output at time Ts when said ferromagnetic element (FE) is triggered and remagnetized by said exciter magnet (EM) without further movement of said exciter magnet (EM);
- and,
- the direction in which said remagnetization of said ferromagnetic element is triggered by said exciter magnet (EM) is established by whether or not said sensor element (SE) has been excited.
Dependencies are inferred from the claim text.