نتایج جستجو برای: magnetic sensors
تعداد نتایج: 429316 فیلتر نتایج به سال:
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...
Arrays of micron-sized magnetic sensors and sensor spacing on a single chip can be used to detect very small magnetic fields with high spatial resolution. These very small magnetic fields, or changes in magnetic fields, are associated with magnetic biosensors, non-destructive test/ inspection/evaluation, document validation including currency and credit cards and magnetic imaging. By using a si...
Neuronal activity generates ionic flows and thereby both magnetic fields and electric potential differences, i.e., voltages. Voltage measurements are widely used but suffer from isolating and smearing properties of tissue between source and sensor, are blind to ionic flow direction, and reflect the difference between two electrodes, complicating interpretation. Magnetic field measurements could...
We describe an immunoassay utilizing standard CMOS technology. An array of Hall sensors is used to detect the magnetic beads that serve as the assay signal. Electrical and magnetic modulation is employed to improve the sensitivity of the sensors. The devices receive two post-processing steps to improve sensitivity and biocompatibility. We have fabricated prototype devices using a 0.25-μm BiCMOS...
In this paper, we describe how magnetoresistive sensors can be integrated with microelectromechanical systems (MEMS) devices enabling the mechanical modulation of DC or low frequency external magnetic fields to high frequencies using MEMS structures incorporating magnetic flux guides. In such a hybrid architecture, lower detectivities are expected when compared with those obtained for individua...
we used dbsa and nano-magnetic for the synthesis of amido alkylnaphtols.
In this paper, we address sensor fusion for the attitude estimation of micromechanical aerial vehicles (MAVs), in particular a biologically inspired robotic housefly. First, a dynamic observer is proposed that estimates attitude based on kinematic data available from different and redundant bio-inspired sensors such as halteres, ocelli, gravitometers, magnetic compasses and light polarization c...
In many situations, it is diicult to measure strong currents directly, so the currents are measured by their magnetic elds (e.g., by sensors glued onto the cable surface). If we have only one cable, then it is easy to reconstruct the current from the magnetic eld. But in many real-life situations, there is a neighboring cable whose current is also unknown. Moreover, the cables are hanging freel...
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