Horst Siedle Gmbh & Co. Kg

Leibniz-institut Fuer Photonische Technologien E.v.

Other

Leibniz-institut Fur Photonische Technologien E.v.

Diegel, Marco

Marco Diegel

Roland Mattheis

Ernst Halder

Peter Dingler

Manfred Scherzinger

Klaus Steenbeck

Günther Georg Diegel

A magnetic revolution counter, and method for determining a predefinable number n of revolutions to be determined of a rotating magnetic field, generated by a magnetic system includes a revolution sensor, which includes magnetic domain wall conductors composed of open spirals or closed, multiply-wound loops, which are formed by a GMR layer stack or a soft magnetic layer comprising locally present TMR layer stacks and in which magnetic 180&#xb0; domain walls can be introduced and located by measuring the electrical resistance of predefinable spiral or loop sections, wherein a single domain wall is, or at least two magnetic domain walls are, introduced into the domain wall conductors such that the at least two domain walls are brought into a defined separation of greater than 360&#xb0; with respect to one another, based on the change in location thereof from a first to a second position, with a rotation of the outer magnetic field by the angle of greater than 360&#xb0;, and are permanently thus spaced apart from one another, and electrical contacts, which are disposed in a defined manner on the domain wall conductors, are provided.

Magnetic revolution counter and method for determining numbers of revolutions that can be determined by means of said revolution counter

A magnetic revolution counter for the self-identification of error states includes magnetic domain wall conductors which are composed of open spirals or closed, multiply-wound loops, formed by a GMR layer stack or a sort magnetic layer of locally present TMR layer stacks and in which the magnetic 180&#xb0; domain walls can be introduced and located, wherein a predefinable bijective magnetization pattern of domain walls and/or domain wall gaps is written in, and the associated signal levels thereof are stored in the form of signal level sequences in a first memory in tabular form, which is compared to tabular target value patterns of the signal level sequences stored in a second memory for each permissible revolution i (0&#x2264;i&#x2264;n), and a third memory is provided, in which tabular error target value patterns of deviations of signal level sequences, caused thereby, from regular signal level sequences stored in the second memory are stored.

Magnetic revolution counter for self-detecting error states when determining numbers of revolutions which can be determined by said revolution counter

A magnetic sensor for the absolute counting of revolutions or linear distances includes a soft magnetic loop structure, which is populated with a predeterminable number of magnetic domains and provided with GMR or TMR layer assemblies, in which at least two separate coplanar loops having predominantly straight subsegments extending in a rhombus-like arrangement with respect to each other are provided, and the at least two loops are connected to each other via a shared intersecting point, wherein directly in front of each intersecting region in which, and after which, the domains can change from one loop to the neighboring loop, these sections of the loop structure are bent away from the conductor guidance and are curved in a siphon-like manner in this region so as to be directed into the interior of the loop structure, wherein the conductors in respective siphon-like troughs intersect each other perpendicularly.

Magnetic sensor for absolute counting of revolutions or linear distances

The invention relates to a device for representing surface colors for simulating print results through a screen, comprising at least one light source and a projection surface. According to the invention the base colors are generated from white light through filters from surface colors and the mixed colors are generated through subtractive color mixing, preferably through reflexive color filters. Through the method for representing surface colors for simulating print results the capability is created to represent surface colors at different locations and at different times identically.

Device and method for the representation of body colours

A sensor element for a revolution counter includes a laminated structure suitable to cause a change in magnetisation in the sensor element without a power supply, simply by the displacement of a magnetic field past the sensor element. Moreover, the laminated structure is suitable for storing a plurality of such changes. The sensor element has a spiral structure.

Sensor element with laminated and spiral structure and without a power supply for a revolution counter

The invention concerns a sensor element () designed in particular for a revolution counter (). It is possible to pass a magnetic field in front of said sensor element (). The latter () has a laminated structure () and a shape () such that power supply is not needed to cause a modification of magnetization in the sensor element () when the magnetic field passes in front thereof, and in that several such modifications can be stored.

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Jena, Germany

Marco Diegel