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Incremental encoder seize the technological high ground!

Changchun Rongde Optics Co.,Ltd.   Release time:2016-07-16   Browse:1016

Incremental encoder seize the technological high ground


With the rapid economic progress, incremental encoders reach in the industry of rapid progress, is a set of optical, mechanical, electrical as one of speed, displacement sensors, its rituals varied widely in handy in the market a wide range
progress in the future, the rapid growth of the market requirements, the future will also occupy a larger market in the market.

Incremental encoder means with the axis of rotation of the encoder is given a series of pulses, and then use the counter to count up or count these pulses according to the direction of rotation, in order to express the amount of displacement angle turn, for incremental photoelectric encoder device, its working principle is driven by a rotating shaft in a radial slits have a uniform code of the main grating disc rotation, in the above code wheel has a main grating parallel to the mirror to the plate, on the steering wheel with two Kam 90o phase offset from one another slit, respectively, and a photodiode receiver through the main grating encoder signals come. At work, in view of the steering wheel does not move, the main grating encoder rotating with the rotor, the light source is directed through the lens parallel to the main grating encoder, by the main grating disc and identification code received by the photodiode to the late phase of an approximately sinusoidal signal 90o,
then the logic circuit formed by the turn signal and counting pulses.

How to use the incremental encoder?

1, incremental encoder has a resolution of differences, using the number of pulses per revolution generated to measure the number from 6-5400 or higher, the more the number of pulses, the higher the resolution; this is an important basis for selection of the
one.

2, incremental encoders usually have three-way signal outputs (differential six signals): A, B and Z, the general use of TTL level, A pulse front, B pulse after, A, B pulse phase difference of 90 degrees, each circle Z sends a pulse to be referred to the mechanical zero position. A general use leads B or B leads A to be sentenced, I incremental encoder is defined as the encoder shaft clockwise to look forward, ahead of A and B is 90 °, counterclockwise rotation and vice versa for the reverse B ahead A is 90 °.
There are not the same, depending on the product description.

3, the use of PLC data collection, the choice of high-speed counting module; use the IPC data acquisition, high-speed counting cards can be used; the use of SCM data acquisition, we recommend the use of optical input port coupler.

4, it is recommended to do B burst forward (forward) pulse, A pulse to do the reverse (backward) pulse, Z datum zero pulse.

5, the establishment of a stack count in the electronic device.
 


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