Rotary position transmitter for registering a rotary position
AssigneeSiemens Aktiengesellschaft
InventorRainer Siess
Life of this patent
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Abstract
A rotary position of a rotary element (2) is registered by means of a sensor arrangement (1) having a number of sensors (6-8) and an evaluation circuit (10) disposed downstream thereof. In each rotary position of the rotary element (2), sensors (6-8) are capable of simultaneously supplying raw signals using which it is possible to determine by which angular range (11-13) the rotary element (2) has rotated. A power generation system (14) outputs power pulses to the sensor arrangement (1) sufficiently frequently that, by using the registered angular ranges (11-13), detection of the direction of rotation of the rotary element (2) is possible.
Claims17
A rotary position transmitter for registering a rotary movement of a rotary element (2) that can rotate about an axis of rotation (3),
- where the rotary position transmitter has a sensor arrangement (1) with at least two sensors (6-8) and an evaluation circuit (10) which is disposed downstream of the sensors (6-8) and by means of which a rotary position of the rotary element (2) relative to a reference position of the rotary element (2) can be registered,
- where, in each possible rotary position of the rotary element (2), the sensors (6-8) are capable of simultaneously supplying raw signals using which it is possible to determine by which of a number of angular ranges (11-13) the rotary element (2) has been rotated relative to the reference position,
- where, at least in the case of a slow rotary movement, power pulses are output forcibly to the sensor arrangement (1) by a first power generation system (14), on the basis of which pulses it is possible to operate the sensor arrangement (1) in each case until it is possible to determine the angular range (11-13) by which the rotary element (2) has been rotated relative to the reference position when a power pulse is output,
- where the first power generation system (14) and the rotary element (2) are coupled to each other in such a way that, by using two angular ranges (11-13) which are determined solely by using the raw signals when immediately successive power pulses are output, unequivocal detection of the direction of rotation of the rotary element (2) is possible.
Dependencies are inferred from the claim text.