An optical probe current sensor module using the Kerr effect of exchange-coupled magnetic film has been fabricated and applied to switching current measurements for IGBT used for the DC-DC converter and the DC-AC inverter of EV/HEV. Since the sensor module using the Kerr effect of the single domain exchange-coupled magnetic film utilizes magnetization rotation only, Barkhausen noise due to doma...

Cable Tension Sensor Based on Magneto-elastic Effect Sun Zhiyuan Dept. of Instrument Development , Institute of Engineering Mechanics, Harbin. China Email:[email protected] ABSTRACT: This article introduces a sensor based on magneto-elastic effect in order to measure the axial tension of steel cable. We explained the basic principle of the sensor in detail, designed and analyzed the magneti...

High-class excavators have magnetic position sensors on a bucket, arm, and boom in order to inform the position of the bucket to the operator. The sensor signal is influenced by the eddy current. Therefore, the relationship between the stroke speed and sensor signal must be informed in order to compensate the bucket position. This paper describes an accuracy improvement of the magnetic sensor s...

Blood pulse is an important human physiological signal commonly used for the understanding of the individual physical health. Current methods of non-invasive blood pulse sensing require direct contact or access to the human skin. As such, the performances of these devices tend to vary with time and are subjective to human body fluids (e.g. blood, perspiration and skin-oil) and environmental con...

In this contribution an accurate Magnetic Indoor Positioning System (MILPS) currently under development is introduced. MILPS utilizes artificial magnetic fields generated by coils for ranging between multiple coils and a magnetic sensor. The proposed DC magnetic signals have excellent characteristics for penetrating various obstacles in indoor environments and show neither special multipath eff...

The development of magnetoresistive sensors based on magnetic nanoparticles which are immersed in conductive gel matrices requires detailed information about the corresponding magnetoresistive properties in order to obtain optimal sensor sensitivities. Here, crucial parameters are the particle concentration, the viscosity of the gel matrix and the particle structure. Experimentally, it is not p...