The piezoelectric vibration gyro-sensor according to claim 1, wherein said tuning fork type vibrator is characterized by a single major crystal axis. The piezoelectric vibration gyro-sensor according to claim 1, wherein said primary electrodes and said secondary electrodes are formed on an X-cut surface.ħ. The piezoelectric vibration gyro-sensor according to claim 1, further comprising: two oscillation circuits and a detector comprising a first frequency detector, a second frequency detector, a differential amplifier, and a synchronous detector.Ħ.

The piezoelectric vibration gyro-sensor according to claim 1, further comprising: two oscillation circuits and a detector comprising a frequency mixer, a frequency detector, and a synchronous detector.ĥ. The piezoelectric vibration gyro-sensor according to claim 1, wherein said primary electrodes are drive electrodes and said secondary electrodes are IDT electrodes.Ĥ. The piezoelectric vibration gyro-sensor according to claim 1, wherein: said tuning fork type vibrator is made of a X-cut quartz crystal and a longitudinal direction of said arms is parallel with a Y-direction of an axis of said quartz crystal.ģ. A piezoelectric vibration gyro-sensor comprising: a tuning fork type vibrator comprising: two rectangular-columnar arms integrated with a base to support lower ends of said arms primary electrodes on each of said two arms and secondary electrodes of a surface acoustic wave element on each of said two arms, wherein: two pairs of said primary electrodes are provided on each said arm, said primary electrodes of each said pair of said primary electrodes on each said arm face each other, and each said pair of said primary electrodes are arranged in parallel at a given distance on said arms each said secondary electrode of said surface acoustic wave element is provided between said primary electrodes at said lower ends of said arms.Ģ.

Piezo electric gyro