INERTIAL SENSOR AND MEASURING METHOD FOR ACCELERATION USING THE SAME

摘要

PURPOSE: An inertia sensor and a method for measuring acceleration using the same are provided to continuously measure DC acceleration through the inertial sensor using a change in a spring constant by continuously applying a low frequency voltage in a sine wave form and a method for measuring acceleration using the same. CONSTITUTION: An inertia sensor comprises a membrane(110), a mass body(120), a sensing unit(130), and a spring constant control unit(140). The membrane is formed in a plate shape and has elasticity so as to displace the mass body. The mass body is provided in a bottom portion of a central portion(113) of the membrane and displaced by inertial force or Coriolis force. When the displacement of the membrane is changed, the sensing unit measures DC acceleration applied to the mass body by measuring and analyzing the voltage through charges generated in the piezoelectric body. The spring constant control unit changes by applying a periodic voltage in a sine wave form to the piezoelectric body of the spring constant control unit when DC acceleration is applied to the mass body.