What is Encoder?
| Encoder Value Check Motion |
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In simplest terms, an encoder is a rotary or linear device that detects or senses a change in positions resulting in a digital signal output. These devices are also known as Incremental Encoders, Digital Panel Controls, Bit Switches, Gray Code Switches, and Digital Switches. All such names are synonymous with a device whose output is a digital signal rather than the conventional analog potentiometric voltage-ratio output. There are two basic encoder classifications: contacting and non-contacting. Contacting encoders have two major parts in their construction: the coded element and a contacting sensor. Movement of the contacting sensor with respect to the coded element produces a digital output signal. Non-contacting encoders are currently designed from one of two available technologies: optical and magnetic. Optical technology is used in construction of the Bourns non-contacting encoder. Optical encoders contain three major parts in their construction: a light source, a code disk, and a detector. |
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