- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
hi frds
what type of sensors available for measuring speed?
which sensors are best for measuring speed?why?
post some materials
- Labels:
-
PSoC 1
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
Whoops, that has to be a bit more precise:
Airplane TAS? -> measuring pressure, temperature
Ship (Log) -> Pulses from log
Car (Tachometer) Pulses from tach-sensor
Bicycle -> one pulse per revolution
Flux of a liquid
Approach to an obstracle -> sonar or microwave echo
... and so on
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
Are you trying to measure -
1) Angular rotation speed/acceleration ?
2) Linear speed/acceleration ?
3) Target object you are trying to measure ?
4) Accuracy of measurement ?
5) Resolution of measurement ?
6) Object material under motion ?
7) Environmental conditions ?
Regards, Dana.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
for linear speed
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
Linear speed was on your list, Dana.
Next questions could be how to pick up the speed:
Rotattion encoder
shaft encoding / optical
Magnetic coil
or ...
Bob
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
In order to help you more of the questions need to be answered.
Are you trying to measure the speed of a butterfly or a Higgs Boson ?
And the other questions posed in earlier part of this, your thread.
Regards, Dana.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
optical
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
difference b/w optical sensor and ir optocoupler? which is best for measuring rpm>?
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
Still we are in a guess: what is the object you're going to measure its speed, what rpm do you expect and
is the measurement a fixed assembly or are you building a hand-held device that you want to show rpms picked up contact-less from any or from special surfaces. Are the rpms low enough to fix sometihn to the object (magnet / refection stripe?
Bob
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
1) Angular rotation speed/acceleration ?
2) Linear speed/acceleration ?
3) Target object you are trying to measure ?
4) Accuracy of measurement ?
5) Resolution of measurement ?
6) Object material under motion ?
7) Environmental conditions ?
Regards, Dana.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
I'm going to ask Cypress to get me a crystal bowl.
Smiling Bob
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
"Slotted" optocoupler device and a optical sensor (which usually employs IR LED and photodiode as discrete devices) are same; the only difference is that the slotted optocoupler comes in a single package. To measure the speed, you need to record the frequency of the pulses coming from the optical sensor. You can refer application note AN2283 - PSoC® 1 Sensing - Measuring Frequency.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
So far we know application is linear speed sensing, or RPM angular rotation speed.
So many questions unanswered, so little time...........
Slotted application, disk or tab attachment, balance, quadrature or not, speed limitations,
buss or current loop or......to consider.
Regards, Dana.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
send me some materials based on ptical sensor?
and photo micro sensor?
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
What about asking mrs. Google yourself ?
Bob