Threshold Magnetic Field Sensor Based on the Oscillator With a Magnetosensitive Piezoelectric Transducer in the Feedback

Autor:	Vladimir Serov, Leonid Y. Fetisov, Y.K. Fetisov, Aleksandr A. Morozov
Rok vydání:	2015
Předmět:	Resistive touchscreen Materials science Electromagnet Acoustics Voltage divider Bimorph Piezoelectricity law.invention Magnetic field Transducer Electromagnetic coil law Electrical and Electronic Engineering Instrumentation
Zdroj:	IEEE Sensors Journal. 15:6409-6412
ISSN:	2379-9153 1530-437X
Popis:	A threshold direct current magnetic field sensor with turn ON tunable level based on the oscillator containing a wideband amplifier, resistive voltage divider, as well as a resonance magnetosensitive transducer in the feedback loop has been described. The transducer is a bimorph plate of piezoelectric lead zirconate titanate with an electromagnetic coil wound on it. It uses a combination of the Ampere force, piezoelectric effect, and the acoustic resonance. The voltage transmission coefficient of the transducer depends on the dc magnetic field applied to the bimorph plate. Switching magnetic field of the oscillator can be tuned within the 5–600 Oe range by adjusting the parameters of the resistive voltage divider. The sensor is sensitive to the dc magnetic field direction.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d1d88b71245353163ab4d0311ecea256 https://doi.org/10.1109/jsen.2015.2459725 Zobrazit plný text záznamu