Piezoelectric sensors. Scheme, description

ENCYCLOPEDIA OF RADIO ELECTRONICS AND ELECTRICAL ENGINEERING
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Sensors. Piezoelectric sensors. Encyclopedia of radio electronics and electrical engineering

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Encyclopedia of radio electronics and electrical engineering / Electrician's Handbook

Action piezoelectric sensors is based on the use of the piezoelectric effect (piezoelectric effect), which consists in the fact that when some crystals are compressed or stretched, an electric charge appears on their faces, the value of which is proportional to the acting force.

The piezoelectric effect is reversible, i.e., the applied voltage causes deformation of the piezoelectric sample - its compression or stretching, according to the sign of the applied voltage. This phenomenon is called reverse piezo effect, used to excite and receive acoustic vibrations of sound and ultrasonic frequencies.

Used to measure forces, pressure, vibration, etc.

Author: Koryakin-Chernyak S.L.

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