Search results for "Hall effect sensor"

showing 3 items of 3 documents

Three-dimensional Hall effect accelerometer for recording head movements of freely moving laboratory animals

1991

A Hall effect device was constructed for a measurement of head movements in three spatial dimensions during classical conditioning experiments in cats. A Hall sensor was used to detect movements of a magnetic fragment floating in a small (15 x 15 mm) cube. The magnetic fragment was kept in the centre of the sealed cube with a thin coil spring which was filled with thin oil for damping excessive afteroscillations. A comparison of this device to a commercial accelerometer showed that the accuracy of the Hall device is sufficient for the movement recordings and that the device is sensitive also to slowly accelerating movements. The construction is compact and can be easily mounted, for example…

NeuronsPhysicsRecording headInstrumentationAcousticsConditioning ClassicalBrainExperimental and Cognitive PsychologyBody movementMotor ActivityAccelerometerCoil springBehavioral NeuroscienceElectromagnetic FieldsHall effectOrientationCatsAnimalsHead (vessel)Hall effect sensorPsychophysiologyPhysiology & Behavior
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Spin-valve current sensor for industrial applications

2003

This work presents an industrial application of a new spin-valve current sensor based on the giant magnetoresistance effect (GMR) and provides a comparison between this sensor and the typical sensor used in these applications, the hall sensor. Experimental results derived from the application of this two sensors in a power application (a bi-directional three-phase rectifier) are shown.

Three phase rectifierChemistrybusiness.industryMetals and AlloysSpin valveElectrical engineeringPower applicationGiant magnetoresistanceCondensed Matter PhysicsSurfaces Coatings and FilmsElectronic Optical and Magnetic MaterialsRectifierHall effect sensorCurrent sensorElectrical and Electronic EngineeringbusinessInstrumentationSensors and Actuators A: Physical
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Giant Magnetoresistance (GMR) Magnetometers

2016

Since its discovering in 1988, the Giant Magnetoresistance (GMR) effect has been widely studied both from the theoretical and the applications points of view. Its rapid development was initially promoted by their extensive use in the read heads of the massive data magnetic storage systems, in the digital world. Since then, novel proposals as basic solid state magnetic sensors have been continuously appearing. Due to their high sensitivity, small size and compatibility with standard CMOS technologies, they have become the preferred choice in scenarios traditionally occupied by Hall sensors. In this chapter, we analyze the main properties of GMR sensors regarding their use as magnetometers. W…

CMOSComputer scienceMagnetometerlawSystem levelSpin valveMagnetic storageSolid-stateHall effect sensorGiant magnetoresistanceEngineering physicslaw.invention
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