A magnetic sensor is a sensor that detects the magnitude of magnetism and geomagnetism generated by a magnet or current. There are many different types of magnetic sensors. A magnetic sensor usually refers to a sensor that converts the magnitude and variations of a magnetic field into electric signals. Magnetic fields, as exemplified by the magnetic field of the earth (earth magnetism) or magnets are familiar yet invisible phenomena.
Magnetic sensors detect moving ferrous metal. Magnetic sensors detect moving ferrous metal. The simplest magnetic sensor consists of a wire coiled around a permanent magnet. A ferrous object approaching the sensor changes magnetic flux through the coil, generating a voltage at the coil terminals. Abstract. Magnetic sensors are often used for security and military applications such as detection, discrimination and localization of ferromagnetic and conducting objects, navigation, position tracking and antitheft systems.
Reed Switch, Hall effect sensor, and proximity sensors are examples of magnetic sensors. sensors perform various magnetic sensing functions: sensing the angle or linear position of a magnet, or directly sensing the magnetic field. Position sensors can be classified according to the measured variable (see Figure 1): proximity, linear displacement sensors or angle sensors.
