초록 ▼

In order to improve the measurement possibilities with regard to a rotating shaft, including the whole angle area (0 to 360.degree.), a rotation angle sensor is mounted that is provided with a radial-bipolar ring-shaped magnetic element (3), three air gaps (5, 6, 7, 8) displaced by an equal angle (.

In order to improve the measurement possibilities with regard to a rotating shaft, including the whole angle area (0 to 360.degree.), a rotation angle sensor is mounted that is provided with a radial-bipolar ring-shaped magnetic element (3), three air gaps (5, 6, 7, 8) displaced by an equal angle (.phi.) being connected with said shaft, and with a stator element (4) of a magnetoconductive material, while a Hall integrated circuit element (1, 2) is inserted in at least two adjacent air gaps (5, 6, 7, 8). The two Hall integrated circuit elements (1, 2) can be connected to an evaluation unit (9) which records a voltage curve of the measured circuit for each circuit element (1, 2), assigns each flow voltage measure to a position angle on the Hall integrated circuit voltage curves, calculates from the position angles assigned to the flow voltage values the actual position angle and gives it as the start signal (A1, A2).

대표청구항 ▼

[What is claimed is:] [1.](a) at least one bipolar-radial annular magnet element connected with the shaft, and(b) at least one stator element made of a magnetically conductive material,(1) in which the annular magnet element is placed, and(2) in which at least three air gaps are located, displaced o

[What is claimed is:] [1.](a) at least one bipolar-radial annular magnet element connected with the shaft, and(b) at least one stator element made of a magnetically conductive material,(1) in which the annular magnet element is placed, and(2) in which at least three air gaps are located, displaced one from the other at an equal angle (.phi.), and(3) wherein a Hall IC element is disposed in each of two adjacent air gaps, each Hall IC element producing a flux voltage curve in response to rotation of the annular magnet element with respect to the stator element, and(c) an evaluation unit, connected to each Hall IC element, which(1) detects the Hall IC voltage curve produced by each respective Hall IC element, and(2) assigns each voltage value on each voltage curve to a position angle, and(3) from the position angles assigned to the voltage values, calculates the de facto position angle and produces an output signal representing said position angle.