scada

[eng_ehab]

dears

is there any type of scada software can make an alarm on specific HISTORICAL TREND shape ????

 

[Hietsu]

What is it that you are actually trying to achieve? How long time period and how many values are we talking about?

The issue sounds quite interesting, but I highly doubt there would be any ready solutions for this kind of thing.

 

[eng_ehab]

What is it that you are actually trying to achieve? How long time period and how many values are we talking about?

The issue sounds quite interesting, but I highly doubt there would be any ready solutions for this kind of thing.

yes it is interesting..i am working on a project pipeline leak detection ..the project containing ultrasonic flow meter and plc ..i need to monitor any change for flow value and pressue ..the historical trend will show this but i need to make an alarm on changing time or specific variation time ..can scada do it ?

 

[gclshortt]

I would look at AdvancedHMI. This is open sourced and includes the drivers for several PLC manufactures as well as some common protocols.
https://sourceforge.net/projects/advancedhmi/
Since this uses visual studio, there are several examples of storing information into databases and doing simple trend calculations.
Ex.
https://www.codeproject.com/Articles/1101932/Simple-trend-calculation
You could then work on exactly how you want the triggering to take place.

Just a thought.
Regards,

 

[TheWaterboy]

You are fingerprinting. That's a tough nut to crack. Sounds like you need to watch Ramp (or decay) Rate or 2 parameters and match that to your known "fingerprint" of a bad condition.