Apparatus for driving gyroscope sensor and method thereof

Abstract

Disclosed herein are an apparatus and a method for driving a gyroscope sensor. The apparatus for driving a gyroscope sensor includes: a detection module; a phase conversion module; an inversion module; a switch module selecting and outputting any one of the driving voltage and the inversion voltage for each axis; a driving module supplying driving voltage of a driving axis at the time of the driving and supplying inversion voltage at the time of stopping the driving; and a control unit passing the driving voltage of the driving axis by controlling the switch module according to a switching control signal at the time of the driving and passing the inversion voltage of each axis by controlling the switch module according to the switching control signal at the time of stopping the driving.

1 - 11 . (canceled) 
     
     
         12 . A method for driving a gyroscope sensor, comprising:
 (A) detecting voltage corresponding to angular velocity of each axis of a gyroscope sensor through a detection electrode of a corresponding axis by a detection module;   (B) generating driving voltage corresponding to each axis by shifting a phase of voltage of each axis detected in the detection module by a phase conversion module;   (C) inverting driving voltage corresponding to each axis of the phase conversion module and generating inversion voltage corresponding to each axis by an inversion module;   (D) providing the driving voltage corresponding to a driving axis in the driving voltage output from the phase conversion module at the time of the driving to the gyroscope sensor by controlling a switch module and a driving module by a control unit; and   (E) supplying inversion voltage of each axis output from the inversion module to driving electrodes of the gyroscope sensor at the time of stopping the driving by controlling the switch module and the driving module by a control unit.   
     
     
         13 . The method as set forth in  claim 12 , wherein (A) the detecting of the voltage includes:
 (A-1) detecting, by a first detection unit configuring the detection module, voltage corresponding to angular velocity of a first axis of the gyroscope sensor through a first-axis detection electrode;   (A-2) detecting, by a second detection unit configuring the detection module, voltage corresponding to angular velocity of a second axis of the gyroscope sensor through a second-axis detection electrode; and   (A-3) detecting, by a third detection unit configuring the detection module, voltage corresponding to angular velocity of a third axis of the gyroscope sensor through a first-axis detection electrode and a second-axis detection electrode.   
     
     
         14 . The method as set forth in  claim 13 , wherein (B) the generating of the driving voltage includes:
 (B-1) shifting a phase of voltage output from the first detection unit by a first phase conversion unit configuring the phase conversion module to generate first-axis driving voltage;   (B-2) shifting a phase of voltage output from the second detection unit by a second phase conversion unit configuring the phase conversion module to generate second-axis driving voltage by; and   (B-3) shifting a phase of voltage output from the third detection unit by a third phase conversion unit configuring the phase conversion module to generate third-axis driving voltage.   
     
     
         15 . The method as set forth in  claim 14 , wherein (C) the inverting of driving voltage includes:
 (C-1) inverting the driving voltage output from the first phase conversion unit by a first inversion unit configuring the inversion module to generate inversion voltage corresponding to the first axis;   (C-2) inverting the driving voltage output from the second phase conversion unit by a second inversion unit configuring the inversion module to generate inversion voltage corresponding to the second axis; and   (C-3) inverting the driving voltage output from the third phase conversion unit by a third inversion unit configuring the inversion module to generate inversion voltage corresponding to the third axis.   
     
     
         16 . The method as set forth in  claim 15 , wherein (D) the providing of the driving voltage includes:
 (D-1) outputting, by the control unit, a switching control signal to the switch module so as to pass through the driving voltage of the driving axis at the time of the driving;   (D-2) passing, by the switch module, the driving voltage of the driving axis in the driving voltage output from the phase conversion module according to the switching control signal; and   (D-3) supplying, by the driving module, the driving voltage of the driving axis passing through the switch module to the driving electrode of the gyroscope sensor.   
     
     
         17 . The method as set forth in  claim 15 , wherein (E) the supplying of the inversion voltage includes:
 (E-1) outputting, by the control unit, the switching control signal to the switch module so as to pass through the inversion voltage at the time of stopping the driving;   (E-2) passing, by the switch module, the inversion voltage of each axis output from the inversion module; and   (E-3) supplying, by the driving module, the inversion voltage of each axis passing through the switch module to the driving electrode of the gyroscope sensor.