Pulse Output Accuracy and Precision

Power test

Test procedure

The pulse counting Arduino on the left was tested by sending 12 different pulse rates simultaneously from the pulse generator Arduino on the right:

Pulse Generation

Using the pulse generator sketch to generate pulse output rates up to 56kW with a pulse every Wh (1000 pulses per kWh)

(56kW was identified to be the maximum stable pulse counting rate)

4, 8,12,16, 20, 24, 28, 32, 36, 40, 44, 48kW in the first run, 52 and 56kW in the second.

Reading the arduino serial output on the computer

Serial output was read with ArduinoComm java program which converts the pulse time into a power value and logs the power values to a file.

Download the particular version of ArduinoComm used for this test here: ArduinoCommPulseOutput.zip Read about how to run it here.

Graphing and statistic calculation in KST

This file is read in real time by KST. Download kst config file here: 12pulsekst.zip

KST was set to take 100 samples from which it calculated the: mean, standard deviation, maximum and minimum

These values were then put in a table here:

Download test results (open office spreadsheet) PulseOutputPowerTestResults.ods

Test Results

Standard Deviation of 100 samples: 0.03%

Error based on 100 sample mean: 0.03%

Maximum Deviation of any given sample: 0.08%

Count test

12 pulse outputs: the first was set at 2kw, the others 24kw up to 44kw.

Pulses were counted over 50 minutes No pulses were missed. Here's the results:

**Pulse Gen** **Pulse Count**
1664 1664
36535 36535
34877 34877
33219 33219
31561 31561
29902 29902
28244 28244
26585 26585
24925 24925
23266 23266
21606 21606
19946 19946

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