Showing posts with label magnetic flux. Show all posts
Showing posts with label magnetic flux. Show all posts

Tuesday, April 28, 2015

NI Multisim: Hall Effect Sensor & Magnetic Flux

NI Multisim: Hall Effect Sensor & Magnetic Flux

Written by Larsha Johnson
4/28/2015



Build a magnetic switch using a Hall Effect sensor in Multisim. In its simplest form, the sensor operates as an analog transducer, directly returning a voltage. With a known magnetic field, its distance from the Hall plate can be determined. Using groups of sensors, the relative position of the magnet can be deduced.

Hall Effect Sensors convert magnetic flux to a voltage. The output voltage of the sensor depends on the magnetic flux density.

Use this device in conjunction with either the Magnetic Flux Source or the Magnetic Flux Generator. Refer to the Magnetic Flux Source and Magnetic Flux Generator sections for more information.

This topic refers to education-specific features of Multisim

Other components used to simulate the design include the magnetic flux source and magnetic flux generator. These are recommended for simulation studies.

Magnetic Flux Source

This device is used with a Hall Effect Sensor.

The Magnetic Flux Source uses the default B key to change the density and polarity of the magnetic flux impacting on a Hall Effect Sensor. You must specify the sphere of influence of the magnetic flux source by entering an integer value in the Magnetic Channel field in the Value tab of the component’s properties dialog box.

The Magnetic Channel field on the Hall Effect Sensor must have a matching integer value for that sensor to be influenced by the source. No two magnetic flux sources or generators should have the same integer value in the Magnetic Channel field. You can have as many Hall Effect Sensors as you wish to react to any given source/generator and as many different sources/generators as desired as long as each source/generator has a different integer value.

Magnetic Flux Generator

This device is used with a Hall Effect Sensor.

 To locate Hall Effect Sensors, click Search from the Select a Component dialog box, and enter *hall effect sensor* in the Function field.

The Magnetic Flux Generator produces a continuous varying magnetic field (sinusoidal with N and S peaks). You can define the flux density, rate of rotation (translating to frequency) and specify the sphere of influence of the generator by putting a unique integer value in the Magnetic Channel field in the Value tab of the source’s properties dialog box.

The Magnetic Channel field on the Hall Effect Sensor must have a matching integer value for that sensor to be influenced by the generator. No two magnetic flux generators or sources should have the same integer value in the Magnetic Channel field. You can have as many Hall Effect Sensors as you wish to react to any given source/generator and as many different sources/generators as desired as long as each source/generator has a different integer value


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