Re: Detection Frequency
Lauren 2012-11-23 13:31:55 6241 Views6 Replies Hi,
The resolution of the encoder depends on the encoder disk. According to my experience, the arduino could detect about 50-70 pps from this encoder when the 4WD running on the max speed!
Regards,
Lauren
The resolution of the encoder depends on the encoder disk. According to my experience, the arduino could detect about 50-70 pps from this encoder when the 4WD running on the max speed!
Regards,
Lauren
2012-11-27 15:57:09 Thank Lauren!
But I don't understand.
50 pulse per second -> f= 20Hz???
Because: 50 pulse per second -> 1 pulse need 1/50 second -> f(detection frequency)=50Hz???
Best Regards, nhatnam06dt1
But I don't understand.
50 pulse per second -> f= 20Hz???
Because: 50 pulse per second -> 1 pulse need 1/50 second -> f(detection frequency)=50Hz???
Best Regards,
nhatnam06dt1 2012-11-26 14:09:22 Oh....
Obviously, this product is not good enough for your application. This product is a simple and cheap solution for 4WD speed control.
1. 50-70 pps -> 50 pulse per second -> just 20Hz frequency.
2. Right. 20 PPR means 20 pulse per one ring.
The ir sensor of this product is fit with your requirement. But the encoder wheel is a low resolution one.I think this type of encoder wheel maybe useful.
[url=http://www.google.com/imgres?start=113&num=10&hl=en&newwindow=1&tbo=d&authuser=0&biw=1502&bih=773&tbm=isch&tbnid=mZWvZntMwZGNLM:&imgrefurl=http://www.embedded.arch.ethz.ch/Projects/EmbossingPrinter&docid=S1d2XMTnVsSuKM&imgurl=http://www.embedded.arch.ethz.ch/uploads/Projects/EmbossingPrinter/IMG_3221_700px.jpg&w=700&h=525&ei=hgazUIjkIMG1iwLy54CwAQ&zoom=1&iact=hc&vpx=192&vpy=290&dur=77&hovh=194&hovw=259&tx=158&ty=77&sig=102631316387023284600&page=4&tbnh=143&tbnw=200&ndsp=40&ved=1t:429,r:14,s:100,i:46]http://www.google.com/imgres?start=113&num=10&hl=en&newwindow=1&tbo=d&authuser=0&biw=1502&bih=773&tbm=isch&tbnid=mZWvZntMwZGNLM:&imgrefurl=http://www.embedded.arch.ethz.ch/Projects/EmbossingPrinter&docid=S1d2XMTnVsSuKM&imgurl=http://www.embedded.arch.ethz.ch/uploads/Projects/EmbossingPrinter/IMG_3221_700px.jpg&w=700&h=525&ei=hgazUIjkIMG1iwLy54CwAQ&zoom=1&iact=hc&vpx=192&vpy=290&dur=77&hovh=194&hovw=259&tx=158&ty=77&sig=102631316387023284600&page=4&tbnh=143&tbnw=200&ndsp=40&ved=1t:429,r:14,s:100,i:46[/url] Lauren
Obviously, this product is not good enough for your application. This product is a simple and cheap solution for 4WD speed control.
1. 50-70 pps -> 50 pulse per second -> just 20Hz frequency.
2. Right. 20 PPR means 20 pulse per one ring.
The ir sensor of this product is fit with your requirement. But the encoder wheel is a low resolution one.I think this type of encoder wheel maybe useful.
[url=http://www.google.com/imgres?start=113&num=10&hl=en&newwindow=1&tbo=d&authuser=0&biw=1502&bih=773&tbm=isch&tbnid=mZWvZntMwZGNLM:&imgrefurl=http://www.embedded.arch.ethz.ch/Projects/EmbossingPrinter&docid=S1d2XMTnVsSuKM&imgurl=http://www.embedded.arch.ethz.ch/uploads/Projects/EmbossingPrinter/IMG_3221_700px.jpg&w=700&h=525&ei=hgazUIjkIMG1iwLy54CwAQ&zoom=1&iact=hc&vpx=192&vpy=290&dur=77&hovh=194&hovw=259&tx=158&ty=77&sig=102631316387023284600&page=4&tbnh=143&tbnw=200&ndsp=40&ved=1t:429,r:14,s:100,i:46]http://www.google.com/imgres?start=113&num=10&hl=en&newwindow=1&tbo=d&authuser=0&biw=1502&bih=773&tbm=isch&tbnid=mZWvZntMwZGNLM:&imgrefurl=http://www.embedded.arch.ethz.ch/Projects/EmbossingPrinter&docid=S1d2XMTnVsSuKM&imgurl=http://www.embedded.arch.ethz.ch/uploads/Projects/EmbossingPrinter/IMG_3221_700px.jpg&w=700&h=525&ei=hgazUIjkIMG1iwLy54CwAQ&zoom=1&iact=hc&vpx=192&vpy=290&dur=77&hovh=194&hovw=259&tx=158&ty=77&sig=102631316387023284600&page=4&tbnh=143&tbnw=200&ndsp=40&ved=1t:429,r:14,s:100,i:46[/url]
Lauren 2012-11-23 23:25:23 Hi!
I have a question about Wheel Encoder for DFRobot 3PA and 4WD Rovers (Product Code: SEN0038).
How much is detection frequency of it?
Thank in advance! nhatnam06dt1
I have a question about Wheel Encoder for DFRobot 3PA and 4WD Rovers (Product Code: SEN0038).
How much is detection frequency of it?
Thank in advance!
nhatnam06dt1 2012-11-23 15:11:07 Thank!
As you say: 50-70pps (pulse per second) -> dectection frequency = 50-70Hz. Is it right?
But I need to know exactly detection frequency. Because my application, I need to 2kHz frequency.
Resolution: 20ppr, mean 20 pulse per one ring (both HIGH and LOW)
Best Regard nhatnam06dt1
As you say: 50-70pps (pulse per second) -> dectection frequency = 50-70Hz. Is it right?
But I need to know exactly detection frequency. Because my application, I need to 2kHz frequency.
Resolution: 20ppr, mean 20 pulse per one ring (both HIGH and LOW)
Best Regard
nhatnam06dt1 