Patent ID: 7870678
Filing Date: 2011-01-18
Classification: G01C,G01P,H05K

Abstract:
1. A hybrid sensor module comprising: first and second sensors that are attached on one surface of a printed circuit board (PCB) so as to detect two-axis signal components parallel to the PCB; a third sensor that is attached on one surface of the PCB such that the axial direction of the third sensor is tilted at a predetermined angle θ from a vertical direction of the PCB in a direction where the first sensor is positioned, the third sensor detecting a signal component sensed in the axial direction; and a signal correction unit that is connected to the first, the second, and the third sensors and corrects signal components, detected from the respective sensors, into signal components of an orthogonal coordinate system by using the following equation: where X′, Y′, and Z′ mean signal components detected from the respective sensors, X, Y, and Z mean signal components of the orthogonal coordinate system, and θ means the angle at which the third sensor is tilted.