What Are Magnetic Sensors and How Are They Used?

Magnetic sensors are small measuring devices that measure and detect magnetic fields through assessing changes in resonant frequency, voltage or mechanical displacement using a variety of methods. These are vastly different from other detection devices as they do not physically measure the properties of a given object like temperature, flow, strain, and pressure. Instead magnetic field sensors measure adjustments and disturbances in resulting magnetic fields and collect details regarding electrical currents, rotation, direction, angle and presence. Magnetic detectors are able to provide clear important information without direct physical contact with an object, which is essential in a multitude of situations.

Sensors are divided into 3 distinct categories based on high, medium and low ranges. Low-field versions are most commonly used in the medical field, as their low frequency is ideal for measuring the appropriate magnetic frequency changes in the human brain. Therefore, they are used in an array of medical devices and tools. Other low-field sensors that are unable to detect slowly changing fields are used more frequently in traffic stops and monitoring.

Medium-field sensors are more sensitive to the Earth’s diverse and continuously changing magnetic field. As result, these devices are best used in compass technology and navigation. They can also be used in vehicle detection and assessment. The use of a particular medium-field model is largely dependent upon its size and measurement capabilities.




High-field magnetic sensors, including a wide range of bias magnetic field sensors, are valuable in security devices that control and monitor windows and doors throughout a building because they are particularly useful in measuring the position of individual objects. Each type can be used for a variety of needs and companies like Sensor Solutions provide a wide range of products for a multitude of uses from exercise speed equipment to a variety of measurements for an array of industries including timber, oil, mining, railroad and medicine. Their services greatly improve the efficiency and safety of employees and customers throughout the economy. Finding an expert manufacturer and developer in magnetic sensors could substantially improve your business.

Applications for a Magnetic Speed and Direction Sensor

By detecting changes in magnetic fields, a magnetic speed and direction sensor can sense speed, position, and direction with extreme accuracy. Companies such as Sensor Solutions offer a variety of
sensors for a range of applications. These precision instruments are found in many machines, from
esoteric apparatuses such as electronically commutated drives to more mundane devices such as power seat controls in cars.

The area where these sensors might see the most use is transportation. They can be found in
automobiles, aircraft, trains, and agricultural and construction vehicles and machinery. They are used to monitor throttle, crankshaft, transmission, and other components of a powertrain to maximize
efficiency. One of their most important functions is in the realm of automotive safety where they play a key role in airbag and anti-lock braking systems. A magnetic speed and direction sensor will figure highly in an electro mobility, or e-mobility, system. E-mobility is a growing segment of the transportation sector that includes electric powertrains, information and communication technologies, and electric vehicle infrastructure.

Military applications for these magnetic sensors include automotive, such as utility trucks and light
armored vehicles, and aviation. They can also be found in GPS and weapons systems.

Power generation is another area where these sensors are used. This includes gen-sets, diesel engines, power turbines, and renewable energy technology, such as wind mills and solar power. 

In the realm of biotech, sensors are incorporated into the control systems of medical equipment such as centrifuges. Magnetic sensors are also utilized in exercise equipment, including elliptical machines, treadmills, and other machines that need distance, speed, and direction monitored. You can find magnetic speed and direction sensors in the most ordinary of household items, such as laundry machines, heating and air conditioning systems, and even in sun blinds.

A magnetic speed and direction sensor is an omnipresent innovation that has helped make industrial
automation, transportation, power generation, and other systems far more efficient and cost-effective.