title: Note: a high-sensitivity current sensor based on piezoelectric ceramic Pb(Zr,Ti)O3 and ferromagnetic materials.
abstract: An electric current sensor using piezoelectric ceramic Pb(Zr,Ti)O3 (PZT) sandwiched between two high permeability cuboids and two NdFeB magnets is presented. The magnetic field originating from an electric wire is augmented by the high permeability cuboids. The PZT plate experiences an enhanced magnetic force and generates voltage output. When placed with a distance of d = 5.0 mm from the wire, the sensor shows a flat sensitivity of ∼5.7 mV/A in the frequency range of 30 Hz-80 Hz and an average sensitivity of 5.6 mV/A with highly linear behavior in the current range of 1 A-10 A at 50 Hz.
authors.affiliation: Research Center of Sensors and Instruments, College of Optoelectronic Engineering, Chongqing University, Chongqing 400044, China.
authors.forename: Wei
authors.initials: W
authors.lastname: He
authors.affiliation: Research Center of Sensors and Instruments, College of Optoelectronic Engineering, Chongqing University, Chongqing 400044, China.
authors.forename: Ping
authors.initials: P
authors.lastname: Li
authors.affiliation: Research Center of Sensors and Instruments, College of Optoelectronic Engineering, Chongqing University, Chongqing 400044, China.
authors.forename: Yumei
authors.initials: Y
authors.lastname: Wen
authors.affiliation: Research Center of Sensors and Instruments, College of Optoelectronic Engineering, Chongqing University, Chongqing 400044, China.
authors.forename: Jitao
authors.initials: J
authors.lastname: Zhang
authors.affiliation: Research Center of Sensors and Instruments, College of Optoelectronic Engineering, Chongqing University, Chongqing 400044, China.
authors.forename: Aichao
authors.initials: A
authors.lastname: Yang
authors.affiliation: Research Center of Sensors and Instruments, College of Optoelectronic Engineering, Chongqing University, Chongqing 400044, China.
authors.forename: Caijiang
authors.initials: C
authors.lastname: Lu