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AnsweredHot!How do I measure Power consumption of a circuit?

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WeHongKongers
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2020/05/24 05:03:08 (permalink)
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How do I measure Power consumption of a circuit?

Hello Guys,
This thread can be answered by non-Microchip fans as well.
 
My design's soft prototype has been completed and now I am going to construct its hardware prototype.
As you know, nowadays, we are concerned about energy consumption of a circuit very much.
 
My question is:
How do we measure the energy consumption of a circuit continuously, for example, twice per second?  A complete measurement is a 24 hours' cycle.
Please recommend cheap instruments which work with SciLab v5.5.2, MATLAB and SimuLink v2020, or Labview Community v2020.
 
Thanks for your opinions.
post edited by Tim Cruise - 2020/05/24 05:10:27
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NKurzman
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Re: How do I measure Power consumption of a circuit? 2020/05/24 09:01:23 (permalink)
+1 (3)
You can use any data logger.
Just put a low value series resistor In line, and log as often as you see fit.
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RISC
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Re: How do I measure Power consumption of a circuit? 2020/05/24 11:11:45 (permalink) ☼ Best Answerby Tim Cruise 2020/05/27 11:13:03
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Hi,
The Power debugger is one possibility. It sends data to the PC 
Regards
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WeHongKongers
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Re: How do I measure Power consumption of a circuit? 2020/05/24 12:32:02 (permalink)
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COOL!!! "One high resolution channel measuring 100nA to 100mA"
My target current should be in the range of uA!
 
I have jotted it down in microchipdirect!  Thanks!
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WeHongKongers
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Re: How do I measure Power consumption of a circuit? 2020/05/25 08:57:55 (permalink)
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RISC
Hi,
The Power debugger is one possibility. It sends data to the PC 
Regards

 
Hello RISC,
This model's features are so powerful!  As to its accuracy range, it excels products cost many times.  If it is fitted with a handsome enclosure, it will be a very high-end ammeter.
 
However, I am afraid it works only with Microchip MCU products.  It may not be a general ammeter or watt-meter.  What is your opinion?
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WeHongKongers
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Re: How do I measure Power consumption of a circuit? 2020/05/27 11:11:40 (permalink)
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The ammeter is a true general ammeter!  This is confirmed by Microchip Support!
  • The power debugger has analog hardware that can measure any DC current within the specification range.
I have put one into my cart in microchipdirect!
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RISC
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Re: How do I measure Power consumption of a circuit? 2020/05/27 16:49:25 (permalink) ☄ Helpfulby Tim Cruise 2020/05/29 10:38:06
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Hi,
The power debugger does not care about the hardware attached.
It is an ATMEL tool and I used it to measure a board with a PIC (but it could have been anything else).
It just measures current / power supply and stream it to data visualizer.
Regards 
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WeHongKongers
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Re: How do I measure Power consumption of a circuit? 2020/05/29 10:44:03 (permalink)
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RISC
Hi,
The power debugger does not care about the hardware attached.
It is an ATMEL tool and I used it to measure a board with a PIC (but it could have been anything else).
It just measures current / power supply and stream it to data visualizer.
Regards 



Hi RISC,
Does this Atmel Power Debugger work with MPLAB X IDE Data Visualizer?  Could you test it briefly in your spare time? grin: grin
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RISC
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Re: How do I measure Power consumption of a circuit? 2020/05/29 12:56:18 (permalink)
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Hi,
I did use it with Data visualizer and it is clearly mentioned on its webpage :
https://www.microchip.com/developmenttools/ProductDetails/atpowerdebugger#additional-summary
It is especially useful to see power consumtpion when your application runs, swich various ports, goes to sleep...
so it makes software optimization much easier
Regards
 
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