Patent ID: 8359758
Filing Date: 2013-01-29
Classification: G01C

Abstract:
1. A three-dimensional inclination angle calculation circuit, comprising: X-axis, Y-axis, and Z-axis vibration sensors configured to provide X-axis, Y-axis, and Z-axis electrostatic capacitances according to three-dimensional positions of a measured plane with respect to a reference plane, respectively; X-axis, Y-axis, and Z-axis position value acquisition units configured to acquire X-axis, Y-axis, and Z-axis position values corresponding to the X-axis, Y-axis, and Z-axis electrostatic capacitances, respectively; and an inclination angle calculation unit configured to calculate an inclination angle of the measured plane with respect to the reference plane based on the X-axis, Y-axis, and Z-axis position values, wherein each of the X-axis, Y-axis, and Z-axis position value acquisition units comprises: