Angle of rotation sensor having a counting arrangement with at least two pulser-wire motion sensors providing electrical energy used as a voltage supply
AssigneeAMB GmbH
InventorsKlaus-Manfred Steinich, Peter Wirth
Life of this patent
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Abstract
An angle of rotation sensor for measuring the angular position of a rotary shaft during more than one revolution consists of a fine angle of rotation sensor linked to the rotary shaft and of a counter. The revolutions of the shaft are all counted without mechanical gears, without an outer voltage supply and without supply batteries, with a simple and economical design. Pulse wire movement sensors supply voltage pulses depending on the rotation of the shaft. The number of voltage pulses is stored in a non-volatile read/write memory.
Claims10
Angle of rotation sensor (1) for measurement of the angular position of a rotary shaft (2) over more than one revolution, including a fine angle of rotation sensor (3) attached to the rotary shaft which measures the absolute angular position of the rotary shaft over one revolution, and a counting arrangement (4) to count the total number of revolutions of the rotary shaft, wherein the counting arrangement (4) comprises at least two pulse-wire motion sensors (70, 71) fixed on an arc-segment, at least one permanent magnet (72), a nonvolatile read/write memory (21) and an electronic counter circuit (13);
- wherein a part of the electrical energy provided by the pulse-wire motion sensor (13) is used as a voltage supply;
- wherein each pulse-wire motion sensor is connected to a pulse forming circuit (16), comprising a charging element (24) which is supplied with voltage pulses from the motion sensors via a switching element (23), and a further switching element (27) through which the voltage of the charging element is passed to an auxiliary voltage supply (34).
Angle of rotation sensor (1) for measurement of the angular position of a rotary shaft (2) over more than one revolution, including a fine angle of rotation sensor (3) attached to the rotary shaft which measures the absolute angular position of the rotary shaft over one revolution, and a counting arrangement (4) to count the total number of revolutions of the rotary shaft, wherein the counting arrangement (4) comprises at least two pulse-wire motion sensors (70, 71) fixed on an arc-segment, at least one permanent magnet (72), a nonvolatile read/write memory (21) and an electronic counter circuit (13);
- wherein a part of the electrical energy provided by the pulse-wire motion sensor (13) is used as a voltage supply;
- wherein the storage element of the non-volatile read/write memory 21 is realized in ferroelectric technology as a crystal dipole, whose switching state is changed by application of an electric field.
Dependencies are inferred from the claim text.