MAGNETIC SENSOR
First Claim
1. A sensor circuit for sensing a circuit change, e.g. circuit break, the sensor circuit comprising:
- a permanent or electro magnet for generating a magnetic field,a sensing system comprising one or more magnetic sensors configured for sensing the magnetic field at least in one direction, and for providing an output signal representative of said sensed magnetic field in the at least one direction, anda controller for detecting an event by comparing said output signal with reference data, said reference data comprising for at least one direction of said magnetic field a reference range having an upper boundary and a lower boundary wherein the upper boundary and lower boundary are magnetically unipolar.
1 Assignment
0 Petitions
Accused Products
Abstract
A sensor circuit for sensing a circuit change, e.g. circuit break, is described. It comprises a permanent or electro magnet for generating a magnetic field, a sensing system comprising one or more magnetic sensors configured for sensing an at least one dimensional magnetic field from the permanent magnet and for providing an output signal representative of said at least one dimensional magnetic field. The circuit also comprises a controller for detecting an event by comparing said output signal with reference data, said reference data comprising for at least one direction of said magnetic field a reference range having an upper boundary and a lower boundary wherein the upper boundary and lower boundary are magnetically unipolar.
15 Citations
20 Claims
-
1. A sensor circuit for sensing a circuit change, e.g. circuit break, the sensor circuit comprising:
-
a permanent or electro magnet for generating a magnetic field, a sensing system comprising one or more magnetic sensors configured for sensing the magnetic field at least in one direction, and for providing an output signal representative of said sensed magnetic field in the at least one direction, and a controller for detecting an event by comparing said output signal with reference data, said reference data comprising for at least one direction of said magnetic field a reference range having an upper boundary and a lower boundary wherein the upper boundary and lower boundary are magnetically unipolar. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 20)
-
-
17. A method for sensing a circuit break, the method comprising
inducing a permanent magnetic field, sensing said permanent magnetic field and providing an output signal representative of said permanent magnetic field, and detecting an event by comparing said output signal with reference data, said comparing comprising comparing an output signal representative of values of the sensed magnetic field in at least one direction with a reference range having an upper boundary and a lower boundary wherein the upper boundary and lower boundary are magnetically unipolar.
Specification