Sensor Element Structure

The sensor element is shaped like a tuning fork, and it consists of piezoelectric parts, a metal block, and a support pin. There are 4 piezoelectric parts: one to drive the oscillators, one for monitoring that maintains the oscillation at a regular frequency, and 2 to detect angular velocity. The 2 oscillators have a 90 degree twist in the center, are connected at the bottom by the metal block, and supported by the support pin. A detection piezoelectric part is attached to the top of each oscillator. The driving piezoelectric part is attached to the bottom of one oscillator, and the monitoring piezoelectric part is attached to the bottom of the other oscillator. See Figure .