Patent ID: 8624588
Filing Date: 2014-01-07
Classification: G01D,G01P,G01R

Abstract:
1. A rotation detector, comprising: a magnetic field sensor for providing an output signal proportional to a magnetic field associated with a ferromagnetic object capable of rotating, the magnetic field sensor comprising: one or more detector circuits coupled to receive the output signal from the magnetic field sensor, each configured to detect a rotation of the ferromagnetic object, the one or more detector circuits configured to generate a respective one or more output signals, each output signal having respective rising and falling edges; and an output protocol circuit coupled to receive the one or more output signals from the one or more detector circuits and configured to generate an output signal indicative of a speed of rotation of the ferromagnetic object and also indicative of a direction of rotation of the ferromagnetic object, wherein the output signal generated by the output protocol circuit comprises: