Измерения с помощью датчиков, преобразователей, сенсоров
    Transducers, gauges, sensors -  Information portal  © 2011 - 2019                                                                                                            Use of material is possible by placing an active link
Piezoelectric transducers
      One of capacity principles of transformation, requiring the special consideration, a piezoelectric effect (fig. 2) at which change is


пьезоэлектрический преобразователь
Home >> Electricity, capacity, piezoelectricity >> Piezoelectric transducers
русский / english


Home

Temperature, thermoelectricity

Magnetic fields

Mechanical stress, strain

Force, pressure, displacement, flow

Humidity, gases

Photo effects, light

Ionizing radiation

Electricity, capacity, piezoelectricity

Physical properties of materials

Literature on transducers

News, exhibitions, conferences

About the project. Contacts






                                                                                                                                                              
See also:
Temperature sensors, thermocouple             Sensors of mechanical stress
Force, pressure, flow                                    Phototransducers
Ionization transducers                                    Hall sensors
Contacts
 Fig. 2. Piezoelectric transducers

measurand grows into the change of electrostatic charge or tension, arising up in some materials at their mechanical tension. Tension usually appears under the action of forces of compression, tension or bend, which are a measurand and affect pickoff either directly or by means of some mechanical connection.
      To perceive the change of charge or tension, to piezoelectric material connect two metallic plates, which form the plates of condenser the capacity of which is determined in a kind actually

                                                                                                                                                                    C = Q/V

where Q is a charge; V is tension (voltage).

      As piezoelectric material, applied in the construction of such transducer, used: 1) natural crystals, such, as a quartz or rochele salt; 2) synthetic crystals, for example sulfate of lithium; 3) the polarized ferromagnetic ceramics, for example титанат of barium.

Датчики, преобразователи. Sensors, transducers
Датчики, преобразователи, sensors, gauge