Piezoelectric sensor

About: Piezoelectric sensor is a research topic. Over the lifetime, 7127 publications have been published within this topic receiving 115903 citations.

Thermoelectric piezoelectric temperature control

Abstract: A heat control and interface stress control principle for a material in which a piezoelectric member is positioned in contact with an interface of the material so that a heat generated expansion of the material generates a piezoelectric signal that controls a thermoelectric cooler in contact with the piezoelectric member

Effects of electrodes with varying thickness on energy trapping in thickness-shear quartz resonators

Abstract: We study the possibility of using electrodes of varying thickness for strong energy trapping in quartz thickness-shear resonators as an alternative for contoured resonators. A theoretical analysis is performed. Results show that nonuniform electrodes can produce strong trapping of thickness-shear modes

Design and fabrication of a smart layer module in composite laminated structures

Abstract: A smart layer module design utilizing a flexible printed circuit process is developed in this paper. The smart layer module, composed of two single-sided flexible polyimide films, piezoelectric sensor/actuator(s) and a pin connector, provides the advantages of convenience, efficiency, and performance when embedded in a smart structure. The problems of the piezoelectric sensor/actuator lead-wires often being easily damaged during fabrication and the short-circuiting of the sensor/actuator by carbon/graphite fibers can be solved. Tensile and modal tests show that the embedded smart layer module increases both the stiffness and strength of a composite laminated smart structure. Experiments of vibration measurement and suppression validate that the smart layer module is effective in engineering applications.

Diagnostics for vehicle deformation sensor system

Abstract: A sensor system for detecting impacts to a vehicle, including diagnostics for monitoring the sensor system. The sensor system includes one or more piezoelectric sensor assemblies (42), each including a coaxial piezoelectric cable (44) contained within a tube housing (54), which is mounted to a structural member of the vehicle. The sensor system may also include accelerometers (36, 38) that are also in communication with the restraints control module (40) and employed in combination with one or more piezoelectric sensor assemblies (42). Further, the sensor system includes diagnostics for monitoring one or more of the sensor assemblies (42) in order to detect a sensor failure, while not interfering with the impact signals from the sensor assemblies (42).