What is Hall Effect?
Hall Effect is a type of position sensing technology which uses magnetic fields to determine the position of an object.
Hall Effect is the most popular type of measuring using a magnetic field and are very popular with various industries.
We have a range of Hall Effect sensors in our portfolio which offer programmable angles and are available in different sizes
What is Hall Effect?
Hall Effect is the technology inside the sensor. It was discovered in 1879 by Edwin Hall – an American physicist. The discovery was so far ahead of it’s time that there was no use for it until decades later when technology had moved further along and people had a wider understanding of semiconducting and materials.
Hall Effect Sensors consist of a piece of semiconductor material attached to a circuit causing a current to flow through it. When this is placed on a magnetic field, the magnetic flux will exert a force onto the semiconductor which then deflects charge carriers and electrons forcing them to one side of the semiconductor and the positive charge will be forced to the opposite side of the semiconductor. As the electrons are forced to the sides, they produce voltage between to two sides of the semiconductor perpendicular to the flow of current. This is called the Hall Effect. The size of the voltage can be measured and an accurate reading can give position of an object.
In a Hall Effect sensor the magnet causing the magnetic field disturbance is attached to an object which is moving. As the object moves, the magnet moves, altering the magnetic field, which disturbs the electrons which gives a voltage reading. The change in the voltage will be used to determine the position of the object connected to the magnet.
In a rotary Hall Effect sensor the magnets are mounted in an “x” format to provide continuous rotation.
Advantages of Hall Effect Sensors
The main advantage of Hall effect sensors and the reason they are so popular is that there are no wearing parts within the technology, they are completely non-contacting (or non touching) this gives the technology infinite life.
Other advantages of using Hall effect sensors are;
· Highly reliable
· Pre-programmable electrical outputs
· High speed operation
· Ability to work in high temperature environments
What is a Hall Effect Sensor used for?
Hall Effect sensors are used throughout many different industries where precise measurement and high reliability is key, some application examples are;
· Vehicle applications
· Wheel speed sensors
· Throttle position sensors
· Crankshaft or cam shaft position measurement
· Steering systems on agricultural machinery
· Processing and packaging machines
· Marine applications
· Wind direction measurement
· CCTV camera angle measurement
Hall Effect Sensors from Ixthus
We have a range of Hall Effect rotary sensors. Some of these come from our sister company Variohm. They are available in various sizes and have the option for programmable angles.
Although Hall Effect sensor can be more expensive than contacting options, they have a much longer life and therefore require little to no maintenance costs and rarely require replacing.
If you have an application for a Hall effect sensor please contact us and we will help you find the right sensor.
For more information please contact: Ixthus Instrumentation Email: firstname.lastname@example.org Tel:+44 (0) 1327 353437 Fax: +44 (0) 1327 353564
Article date: Mon, 24 Aug 2020 13:10:10 +0100 GMT
Title:What is Hall Effect?