Driving circuit, system, and driving method for gyro sensor

摘要

Provided is a driving circuit, system, and driving method for a gyro sensor. The gyro sensor driving circuit includes a charge/voltage conversion unit receiving a charge output from a vibration-type gyro sensor and converting the charge output into a voltage signal; a phase converting unit receiving a signal from the charge/voltage converting unit and converting a phase of the received signal; a pulse generating unit receiving an output signal of the phase converting unit and outputting the output signal as a pulse wave; a pulse converting unit converting the pulse wave output from the pulse generating unit into a pulse signal using a certain voltage level as reference so as to apply the pulse wave as a driving signal; and a control unit controlling the pulse converting unit to generate the pulse signal using the certain voltage level as reference.

主权项

1. A gyro sensor driving circuit comprising:
a charge/voltage conversion unit configured to receive a charge output from a vibration-type gyro sensor and to convert the charge output into a voltage signal; a phase converting unit configured to receive a signal from the charge/voltage converting unit and to convert a phase of the received signal; a pulse generating unit configured to receive an output signal of the phase converting unit and to output the output signal as a pulse wave; a pulse converting unit configured to convert the pulse wave output from the pulse generating unit into a pulse signal using a certain voltage level as reference so as to apply the pulse signal as a driving signal of the vibration-type gyro sensor; and a control unit configured to control the pulse converting unit to generate the pulse signal using the certain voltage level as reference, wherein the pulse converting unit comprises:
a voltage distributor configured to distribute a certain voltage to voltage levels; anda certain potential pulse generating circuit configured to be switched by a pulse wave output from the pulse generating unit and to generate the pulse signal using the certain voltage level obtained from the voltage levels distributed by the voltage distributor as reference according to control of the control unit.