Magnetic Sensors are devices that can detect magnetic fields and their changes, obtaining information by sensing the strength, direction, or presence of a magnetic field. This conversion process allows the magnetic sensor to accurately capture and identify parameters such as magnetic field strength and direction, thus achieving sensitive monitoring of the physical environment. This kind of sensor works based on the physical principle of magnetoresistance effect, Hall effect, giant magnetoresistance effect, etc., and converts the magnetic field change into electrical signal output, so as to realize the measurement and analysis of the magnetic field. It can measure static or dynamic magnetic fields and convert them into electrical signals in the form of voltage and current, which is convenient for subsequent data processing and analysis. This characteristic makes the magnetic sensor play an irreplaceable role in automatic control, computer information processing, security control and other fields.

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