en:lesson02
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| Operation of magnetometer is based on application of magnetoresistive effect when electrical resistance of a conductor is fluctuating in correspondence with magnetic fields pattern direction. Sensor operation is based on a layer of permalloy (special nickel-iron alloy) possessing a strong magnetoresistive effect. Electrical resistance of permalloy usually fluctuating within the range of ±5 % depending on force and pattern direction of magnetic field. | Operation of magnetometer is based on application of magnetoresistive effect when electrical resistance of a conductor is fluctuating in correspondence with magnetic fields pattern direction. Sensor operation is based on a layer of permalloy (special nickel-iron alloy) possessing a strong magnetoresistive effect. Electrical resistance of permalloy usually fluctuating within the range of ±5 % depending on force and pattern direction of magnetic field. | ||
| - | {{::02image004.png?nolink&400|}} | + | {{:en:12-figure7-1.png?600|}} |
| Therefore measuring the electric current force flowing through the layer of permalloy at the permanent current of +5V it is possible to determine the direction of magnetic fields pattern. To measure the magnetic field pattern direction by all three axes three little sensors are utilized oriented along axes X, Y and Z , installed in one microchip. | Therefore measuring the electric current force flowing through the layer of permalloy at the permanent current of +5V it is possible to determine the direction of magnetic fields pattern. To measure the magnetic field pattern direction by all three axes three little sensors are utilized oriented along axes X, Y and Z , installed in one microchip. | ||
| - | {{::02image005.png?nolink&400|}} | + | {{:en:earth-magnetic-field.png?600|}} |
| - | {{::02image007.png?nolink&200|}} | + | {{:en:hmc5883l-1.jpg?300|}} |
| ==== Checking of magnetometer functional capability ==== | ==== Checking of magnetometer functional capability ==== | ||
en/lesson02.txt · Last modified: 2020/03/25 16:28 (external edit)
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