Peak extraction
Peak extraction
(OP)
Hello everybody...
I would like to inquire you regarding a certain device that I am looking for.
In the company I work for we are using a load cell to measure the force applied in one of our machines and an indicator to view the resulting data.
The force readings follow, more or less, a sinusoidal pattern with a frequency of 15-20 Hz.
We are taking multiple readings between two consecutive "peaks" so the number of readings per minute is approx. 10000.
What we are now looking for is a signal processor that could be programmed so that it can extract the peaks from the data and furthermore provide us with the average value of x consecutive peaks (x is variable). The above peak extraction and averaging should not be done in a PC (due to stability reasons) but in the specified equipment
This indicator should be able to connect to both a PC and a PLC so that the resulting signal can be processed furthemore.
I would appreciate it if you could propose a device like that.
Thanx everyone....
I would like to inquire you regarding a certain device that I am looking for.
In the company I work for we are using a load cell to measure the force applied in one of our machines and an indicator to view the resulting data.
The force readings follow, more or less, a sinusoidal pattern with a frequency of 15-20 Hz.
We are taking multiple readings between two consecutive "peaks" so the number of readings per minute is approx. 10000.
What we are now looking for is a signal processor that could be programmed so that it can extract the peaks from the data and furthermore provide us with the average value of x consecutive peaks (x is variable). The above peak extraction and averaging should not be done in a PC (due to stability reasons) but in the specified equipment
This indicator should be able to connect to both a PC and a PLC so that the resulting signal can be processed furthemore.
I would appreciate it if you could propose a device like that.
Thanx everyone....





RE: Peak extraction
Type ?
It would be -- unless you need 100-s or more -- simplest
to use a PC as signal processor using the parallel port to interface to the ADC.
The programming is trivial.
<nbucska@pcperipherals.com>
RE: Peak extraction
I already have the software for the data extraction ready but I can only use it for trials for the above reason. There is another way to create a small circuit that rapidly set to zero the maximum recorded value but this, of course, is not CE certified and cannot be used either....
I have found programmable indicators that can do it though and this is what we are propably going to do after all.
Thanx anyway....
RE: Peak extraction
You could use 2 or more parallel processors and let the main controller to decide which is reliable.
You can buy for about $160 a 2.6"x2 PC compatible processor.
<nbucska@pcperipherals.com>
RE: Peak extraction
Now if there was another way to have two systems running the same software and a controller to decide which of the two is stable then I guess that would be better.
But I don't think that something like that exists.
RE: Peak extraction
your own software. You can add self-calibration, etc.
These would use DOS and definitelly not WINDOWS. No disk
either but flash memory.
Need more ? send more info, spec's, etc.
<nbucska@pcperipherals.com>