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Sensor Customer Case Studies
Synthesized Transmitting Coil for Magnetic Focusing of Pulsed Eddy Current for Downhole Casing Inspection
Applied Sciences, July 30, 2022
A transmitting coil with multiple connected sections using different winding directions to adjust the magnetic field distribution without requiring multiple transmitting coils. The design uses an observation array of 25 NVE AAH002 sensors.
 
Simple Giant Magnetoresistance Probe Based Eddy Current System of Defect Characterization for Non-Destructive Testing
Advanced Electromagnetics, May 11, 2022.
An eddy current probe using AAH004 sensors.
 
A New Platform of Iron Oxide-Based Nanoparticles Assay Using GMR Chip-Based Sensor With Microcontroller
IEEE Sensors Journal, November 1, 2021.
An AAL024 GMR magnetometer and an Arduino for of magnetic nanoparticle immunoassays.
 
High Sensitivity Differential Giant Magnetoresistance (GMR) Based Sensor for Non-Contacting DC/AC Current Measurement (.pdf)
Sensors Journal, January 6, 2020.
An AA003 GMR analog sensor is linearized with adjustable bias for use as a current sensor.
 
Design and Construction of a Magnetic Signal Detection Block for Magnetic Nanoparticles that Flow Through Straight Microchannels
International Conference on Electrical Engineering, Computing Science and Automatic Control, November 11-13, 2020.
A “Lab-on-a-chip” design based on an AAH002 sensor with constant-current power, differential amplifier, and filter.
 
Non-Invasive Measurement of Glaucoma Disease at Earlier Stage Through GMR Sensor AH Biomagnetic Signal From Eye and RADWT Algorithm
IEEE Sensors Journal, April 9, 2019.
An NVE sensor is used to measure the biomagnetic signal of the aqueous humor for early glaucoma detection.
 
Eddy Current Testing with Giant Magnetoresistance (GMR) Sensors and a Pipe-Encircling Excitation for Evaluation of Corrosion under Insulation
Sensors (Basel), Oct. 2017.
Three perpendicularly-aligned AA004 sensors used in an eddy current nondestructive testing system for pipes.
 
Analysis of a GMR-Based Plethysmograph Transducer and its Utility for Real-time Blood Pressure Measurement (.pdf)
Engineering in Medicine and Biology Society, 39th Annual International Conference of the IEEE, July 2017.
A “magneto-plethysmograph” uses two AA002 sensors for real-time, cuff-less measurement of blood pressure based on pulse wave propagation time.
 
Non-Destructive Detection of Wire Rope Discontinuities from Residual Magnetic Field Images Using the Hilbert-Huang Transform and Compressed Sensing (.pdf)
Sensors (Basel), March 2017.
An array of 18 AAH002 sensors excited by small magnets placed end-to-end to form a magnetic strip are used to detect cable defects.
 
On-Line Irradiation Testing of a Giant Magneto-Resistive (GMR) Sensor (.pdf)
CNL Nuclear Review, Vol. 5, No. 1, June 2016.
An AA003 sensor was irradiated with a large, 200 Mrad dose of gamma rays, with no significant evidence of degradation of the sensor characteristics was observed.
 
A Wireless Intracranial Brain Deformation Sensing System for Blast-Induced Traumatic Brain Injury
Nature, 2015.
NVE AAH002-02E sensors are used to track magnet movement to sense blast-induced traumatic brain injury.
 
Low-Power Flow Meter Design Using GMR Sensors (.pdf)
Texas Instruments TI Designs, 2014
A rotary water meter reference design using two AA002 sensors and an MSP430 microcontroller.
 
Dual-Stage Nanopositioning for High-Speed Scanning Probe Microscopy (.pdf)
IEEE/ASME Transactions on Mechatronics, 2014.
An NVE GMR analog sensor is used for extremely precise positioning.
 
Extending the GMR Current Measurement Range with a Counteracting Magnetic Field (.pdf)
Sensors, 2013.
Magnetic bias extends the current-measurement range for an AAL002 sensor to ±45 amps. A microcontroller provides automatic scaling.
 
Monitoring active corrosion of metals in natural environments with magnetometry
Journal of Corrosion Science, Oct. 2012.
The researchers demonstrate practical corrosion monitoring in aluminum or steel using NVE magnetic sensors.
 
360° Winkelmessung ist auch mit geringem Stromverbrauch moglich (“360° angle measurement is possible with low power consumption”; .pdf; German)
Industrielle Automation, 2012.
An NVE AAT-001 TMR angle sensor combined with an interface IC.
 
A Current Sensor Based on the Giant Magnetoresistance Effect: Design and Potential Smart Grid Applications (.pdf)
Sensors (Basel), 2012.
An NVE AA002 is used for a 0 to 5 amp current sensor in a magnetic ring with 99.97% linearity.
 
Flexible GMR Sensor Array for Magnetic Flux Leakage Testing of Steel Track Ropes (.pdf)
Journal of Sensors, 2012.
An array of 12 AA004-02 sensors on a flexible circuit board was wrapped around thick steel ropes for nondestructive testing, and was demonstrated to effectively detect defects and provide spatial information for imaging.
 
Controller for upper-limb neuroprosthesis (.pdf)
Journal of Rehabilitation R&D, 2009.
A magnetic proximity sensor using three NVE AA-Series sensors.
 
GT™ Sensors in High-Speed Cylinder Position Sensing
Industrial Embedded Systems, 2008.
A design case study using an ABL014 sensor and MSP430 microcontroller.
 
GMR Sensor Tackles High-Speed Motion
Industrial Embedded Systems, 2008.
A design case study using an NVE GT™ gear tooth sensor.
 
Using AA002 Sensors With the TI MSP430 Scan Interface (.pdf)
Texas Instruments Application Report, 2007.
This report describes a rotation detector using a pair of AA002 sensors and a TI microcontroller.
 
Safety device uses GMR sensor (.pdf)
EDN, 2003.
An NVE AA004-01 sensor used in a ground-fault interrupter.
 
Nondestructive Inspection (NDI) for Diffusion Bonded Components (.pdf)
Defense Technical Information Center, August 2003.
An array of eight AAH002 sensors produces eddy current maps for nondestructive inspection.
 
GMR sensors manage batteries (.pdf)
EDN, 1999.
An NVE AA004-02 used as a non-contact current sensor in a Battery Management System.
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