Magnetic Sensor Working and Its Applications

The measurement of proximity, position, as well displacement of objects is very important in several applications which include the position of the valve, detection of level, safety, machine control, and process control. There are many manufacturing companies offering magnetic sensors that are used in many applications where high dependability & cost-optimized solutions are needed. In a recent discovery, the board has allowed improving these sensors. The National Institute of Standards & Technology (NIST) has discovered that merging magnetic alloy layers with silver nanolayers will increase the sensitivity of magnetic. Being capable to utilize enormously thin films (magnetic sensor) is essential in applications like weapon detection, medical devices, and data storage. This article discusses an overview of the magnetic sensor, working and its applicaitons

What is a Magnetic Sensor?

Magnetic sensor definition is a sensor which is used to notice disturbances as well as changes within a magnetic field such as strength, direction, and flux. There are different types of detection sensors which can work on some of the characteristics like light, pressure, temperature. These sensors are separated into two groups. The first one is used to calculate the total magnetic field, whereas the second one is used to calculate vector components of the field.


The vector components in the magnetic field are individual points and the techniques which are used for making these sensors mainly involved in a variety of blends of electronics and physics.

Magnetic Sensor Working Principle

The magnetic sensor comprises a chip with a magnetoresistive component which is used to detect a magnetic vector & a magnet intended for magnetic vector biasing which can be detected by the magnetoresistive component.

The chip which is used in the sensor can be used for sensing the change within the magnetic vector. This vector notices the behavior of a magnetic body depending on a change of resistance value of the magnetoresistive component.

Whenever the magnetic vector biasing is occurred due to the magnet in co-operation by the magnetic body, then it will be the motion inside the sensing chip. This sensor can be used to compass functionality, which is accessible during Navigation menu.


Types of Magnetic Sensors

The classification of Magnetic sensors can be done based on detecting the dissimilarity of magnetic sensors like a low field, earth field, and bias magnetic field sensors.


1). Low Field Sensors

These sensors are used to detect extremely low values of the magnetic fields like 1uG (1 Gauss is equal to 10-4 Tesla. The best examples of this are Nuclear procession, Fiber optic, and SQUID. The applications of low field sensors mainly include in nuclear as well as medical fields.

2). Earth Field Sensors

The range of magnetic for this type of sensor ranges from 1uG to 10 G. This sensor uses the magnetic field of the earth in several applications like the vehicle as well as navigation detection.

3). Bias Magnet Field Sensors

These sensors are used to sense the enormous magnetic fields above 10 Gauss. Most of the sensors used in industries use permanent magnets like a source of the noticed magnetic field. These magnets will bias otherwise magnetize the ferromagnetic objects which are close to the sensor. The sensors which are in this type mainly include hall devices, GMR sensors, and reed switches.

How to Measure Magnetic Field?

Generally, the magnetic field can be surrounded by an electric current, and it is noticeable through its strength otherwise communication on magnets, electrical charges, as well as magnetic products. Here, the magnetic field direction, as well as strength, can be calculated. The variations within the field are detected as well as changes are made inside the response of machines.

The best example of this is the magnetic field of the earth, which is measured & tracked with the help of magnetic sensors. These are elements of the navigational tools which are designed by different manufacturer companies like Honeywell. Most of these sensors are applicable for measurement within navigational tools, scientific measuring, and industrial processes.

Thus, this is all about magnetic sensors. The magnetic sensor applications include magnetic flux measuring & the direction as well as the strength of a magnetic field. These are mainly applicable in the magnetic sensor for android, navigation, industrial and scientific measurement applications. Here is a question for you, what is the magnetic compass sensor?