Micronas Gmbh

Tdk-Micronas Gmbh

Andreas Ring

Joerg Franke

Timo Kaufmann

Hans-Jörg Fink

A sensor device for suppressing a magnetic stray field, having a semiconductor body, a first pixel cell and a second pixel cell integrated into a surface of the semiconductor body together with a circuit arrangement. Each pixel cell has a first magnetic field sensor and a second magnetic field sensor to detect a magnetic field in the x-direction and a magnetic field in the y-direction. The first pixel cell is spaced apart from the second pixel cell along a connecting line, and the substrate and the semiconductor body are disposed in the same IC package. A magnet is provided that has a planar main extension surface in the direction of an x-y plane and has a magnetization with four magnetic poles in the direction of the x-y plane. The IC package is spaced apart from the main extension surface of the magnet in the z-direction and at least partially within a ring magnet.

Sensor device

A procedure for checking the operational capability of an electric circuit, which has a sensor module and a diagnosis mechanism with the sensor module including an integrated switching circuit, wherein the sensor module has at least one output terminal connected to the diagnosis mechanism and power supply terminals, and wherein an operating voltage is applied via cables to the power supply terminals. The sensor module is switched to a test mode, in which a communication test signal is emitted from the output terminal. This signal is read in by the diagnostic mechanism and compared with a tolerance band range, in order to verify that the communication with the sensor module is operational. In the event of operational communication, the operational capability of the switching circuit is tested.

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Freiburg, Germany

Andreas Ring