Patent ID: 11906374
Assignee: YAMAHA CORPORATION
Field: Measurement (Instruments)
Classification: CPC G  A | IPC G

Claim 0:
1. A measurement method, comprising:
measuring, by using a piezoelectric sheet sensor in contact with a measurement object, vibration transmitted from the measurement object to the piezoelectric sheet sensor; and
measuring a pressing force between the measurement object and the piezoelectric sheet sensor, wherein
in the measuring of the pressing force, the pressing force between the measurement object and the piezoelectric sheet sensor is measured based on a signal generated between a pressing force measurement electrode arranged on a first surface of a sheet-like piezoelectric body and a second electrode arranged on a second surface of the sheet-like piezoelectric body,
in the measuring of the vibration, the vibration transmitted from the measurement object to the piezoelectric sheet sensor is detected based on a signal generated between a vibration measurement electrode arranged on the first surface of the sheet-like piezoelectric body and the second electrode, and
the pressing force measurement electrode is electrically separated from the vibration measurement electrode.