Method for determining a distance and an integrated magnetic field measuring device

摘要

An integrated magnetic field measuring device is provided that includes a semiconductor body arranged on a metal substrate and having a first surface, and a plurality of metal surfaces formed on the surface, a first magnetic field sensor, formed in the semiconductor body and having a first sensor signal, and second magnetic field sensor having a second sensor signal, and a current-carrying first conductor. A third magnetic field sensor with a third sensor signal is formed in the semiconductor body. The first magnetic field sensor, the second magnetic field sensor, and the third magnetic field sensor have a substantially identical orientation to Earth's magnetic field and a different distance to the first conductor and the magnetic field of the first conductor simultaneously penetrates the first magnetic field sensor, the second magnetic field sensor, and the third magnetic field sensor.

主权项

1. A method for determining a distance of a current-carrying first conductor, the method comprising:
providing an integrated magnetic field measuring device having a semiconductor body with a first magnetic field sensor formed in the semiconductor body, having a second magnetic field sensor; and having a third magnetic field sensor; providing a first sensor signal from the first magnetic field sensor; providing a second sensor signal form the second magnetic field sensor; providing a third sensor signal from the third magnetic field sensor; penetrating substantially simultaneously the first magnetic field sensor, the second magnetic field sensor, and the third magnetic field sensor by the magnetic field of the first conductor; determining a first difference from the first sensor signal and the second sensor signal; determining a second difference from the third and the second sensor signal; and forming a quotient from the first difference and the second difference to determine a distance of the magnetic field from the current-carrying conductor.