¿Qué es un sensor magnetoestrictivo?

What is Magnetostriction?

Have you ever thought about what happens when you bend a metal piece or twist it? When you do this, its called "strain. " Strain alters the ability of the metal to pass electricity. That means that when metal is bent or twisted, it may not operate the same as when it was straight. Scientists are investigating this effect, and they measure these transitions in a metal’s magnetic domain using something called magnetostriction. Magnetostriction is a specific term that refers to the alteration of the shape or dimension of a magnetic material under the influence of the external magnetic field. This is an important effect because it allows us to produce specialized devices known as sensors. In a wide range of applications, these sensors can sense minute variations in magnetic fields.

How Do Magnetostrictive Sensors Works?

Magnetostrictive sensors are amazing devices where an electrical signal is passed through a wire or rod. This wire is composed of a sensor magnetostrictivo metal. As the electric signal passes through the wire, a magnetic field is generated around it. This new magnetic field is then coupled with the magnetic field from a nearby magnet. The two fields add constructively to form a wave moving along the wire. When this wave propagates to the end of the wire, it gets reflected. By determining how long it takes for the wave to return to its original location, we learn the distance between the magnet and the copper coil. This can be achieved extremely precisely, to the point where we can measure distances smaller than a millimeter! Such precision is critical in many applications.

This is the 8th blog post of 9 blog posts about magnetostrictive level measurement technology.

Algunos tipos comunes de sensor de posición lineal magnetoestrictivo include linear sensors and rotary sensors. • Linear sensors: These measure the linear distance from the wire to the magnet. These sensors are extremely useful in measuring the position as well as movement of straight-line devices such as hydraulic cylinders and linear actuators. Rotary sensors, in contrast, track the distance something has rotated or turned. They are usually used for devices that require measuring angles—such as motors, gearboxes, or crankshafts. Beyond these two, 3D sensors are custom-designed to sense multiple parameters and are capable of sensing variable fluctuations.

How Various Industries Benefit From Magnetostrictive Sensors

They provide better control and monitoring of machines and systems, thus revolutionizing many industries. In the automotive sector, these sensors control the positioning of critical engine components such as the valves and throttle body, for instance. In the aerospace sector, they are used to measure how wings of an aircraft move and control landing gear. Magnetostrictive sensors are highly beneficial for the controlling of robots, assembly lines, and conveyor systems within the manufacturing industry. They make sure everything goes as it should. For example, these sensors have been used in prosthetic limbs to enable person who utilize them to help keep track of the moving parts. They also assist in positioning MRI machines correctly to guarantee accurate imaging.

Conclusión

Magnetostrictive sensors are unique types of sensors that operate based on the sensor de posición magnetostrictivo theory to sense the changes in the magnetic fields. They have a reputation of high accuracy, reliability and durability. These sensors have various types and can be tailored as per varying requirements in different sectors. The indispensable components that lead to this revolution are called sensors and that is the building we will be visiting from now on. To read more about magnetostrictive sensors please feel free to visit our website or contact us.