Understand the Working Principle of Magnetic Angle Sensor
Understand the Working Principle of Magnetic Angle Sensor
A magnetic angle sensor is a device that converts magnetic flux variations and magnitude into electric impulses. It is used in different industrial applications, such as rotation, angular displacement, and linear sensing. In this blog, readers will know the working principle of this sensor.
The surge in demand for cutting-edge safety features in automobiles boosts the market growth. Magnetic angle sensors play an important role in the implementation of several safety features, such as electronic stability control, anti-lock braking systems, and collision avoidance systems. These systems depend on magnetic sensors to accurately detect the speed, position, and direction of a vehicle and offer real-time data to the vehicle's control system. In addition, according to a research report by Astute Analytica, the Global Magnetic Angle Sensor Market is likely to increase at a compound annual growth rate (CAGR) of 6.8% over the forecast period from 2023 to 2031.
The sort of sensor element utilized determines the functioning principle of a magnetic sensor. The Earth's magnetic field can be used with any kind of magnetic sensor. The moving ferrous can be found with a basic magnetic sensor. The magnetic flux through the coil varies when a metal object is moved close to it, or when the wire is wound on a permanent magnet, which produces a voltage at the coil's terminals.
Take the coiled magnetic sensor, which uses the coil as a straightforward sensor component to explain how magnetic sensors function. The coil's functionality is just restricted. Thus, a very sensitive magnetic sensor is built using it along with coils made of other magnetic materials. Resolvers, fluxgate sensors, search coils, rotation and angle sensors are only a few of the coils used in magnetic sensors in a variety of applications.
The coil may sense changes or oscillations in the magnetic field, but it cannot directly measure magnetic fields. The magnetic flux density of the coil will rise when the magnet is brought closer to it. As a result, an electromotive force (EMF) and induced current are created, which are the opposing forces. When the coil's movement ceases, the change in magnetic flux density also comes to an end, and the induced electromotive force and current both end.
Examine the induced current and electromotive force to calculate the proportion of the change in magnetic flux density and direction.
Purposes of magnetic angle sensors
Magnetic sensors are quite beneficial in a variety of industries. Depending on their function, they can be divided into magnetic location and range sensors, magnetic field detectors, magnetic proximity switches, force and torque detectors, and current sensors.
Position measurement is the main use of magnetic sensors. A hall effect sensor and a small permanent magnet are the main components of the majority of magnetic sensors for positional measurement.
Robotics and the implementation of robots for automated manufacturing is another significant area of industrial expansion. Magnetic sensors, especially linear and angular position sensors, are crucial to keeping industrial processes running smoothly. They are used to evaluate the accuracy and precision of the robots' motor movements.