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Changes for page Testing Procedures

Last modified by robert on 2024/12/09 16:08
From version 4.1
edited by robert
on 2024/12/02 13:21
Change comment: There is no comment for this version
To version 9.1
edited by Jack Dent
on 2024/12/09 10:18
Change comment: There is no comment for this version

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1 -XWiki.robert
1 +XWiki.JackD
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26 26  
27 27  (% class="box infomessage" %)
28 28  (((
29 -Unit powering ON is not instant, there may be a 10 to 15 sec delay.
29 +NOTE: Unit powering ON is not instant, there may be a 10 to 15 sec delay.
30 30  )))
31 31  
32 32  
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39 39  
40 40  (% class="box infomessage" %)
41 41  (((
42 -The following step, power feature is not present in LPR200, therefore this step cannot be verified for  LPR recorders.
42 +NOTE: The following step, power feature is not present in LPR200, therefore this step cannot be verified for  LPR recorders.
43 43  )))
44 44  
45 45  == System Test ==
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67 67  
68 68  (% class="box infomessage" %)
69 69  (((
70 -There are two types of solar regulators available. Make sure to not mix them as they supply different Voltages, 7.7V and 13.8V.
70 +NOTE: There are two types of solar regulators available. Make sure to not mix them as they supply different Voltages, 7.7V and 13.8V.
71 71  )))
72 72  
73 73  Navigate to “System Information” in the Menu and note the battery icon will have a lightning symbol indicating it’s charging, also observe the state of charge % is increasing under.
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82 82  
83 83  (% class="box infomessage" %)
84 84  (((
85 -If the user requires to verify the sensor or the validity of the recorded data, a power spectral density analysis would need to be performed, see rest of document (link here) for instructions on how to perform this test.
85 +NOTE: If the user requires to verify the sensor or the validity of the recorded data, a power spectral density analysis would need to be performed, see rest of document (link here) for instructions on how to perform this test.
86 86  )))
87 87  
88 88  === Recording test ===
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103 103  
104 104  (% class="box infomessage" %)
105 105  (((
106 -For procedure on how to use and set-up the PSD script refer to the “Performing PSD function on recorded sensor data procedure” document. (LINK)
106 +NOTE: For procedure on how to use and set-up the PSD script refer to the “Performing PSD function on recorded sensor data procedure” document. (LINK)
107 107  )))
108 108  
109 109  === Troubleshooting ===
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295 295  * Alternatively the SD card may be faulty and need to be replaced
296 296  )))
297 297  
298 -
299 299  (% class="table-condensed" style="width:1063px" %)
300 300  |(% colspan="2" style="width:1060px" %)(((
301 301  **General System Errors **
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412 412  * There is a damaged cell which will need to be replaced
413 413  )))
414 414  
415 -
416 416  (% class="table-condensed" style="width:1064px" %)
417 417  |(% colspan="2" style="width:1061px" %)(((
418 418  **Hardware Errors **
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454 454  
455 455  == ... via Centaur (Nanometrics sensors) ==
456 456  
457 -GUIDE TO TEST VIA CENTAUR
455 +//(originally written by F. Bozinovic May 2024)//
458 458  
457 +
458 +=== Introduction ===
459 +
460 +Sensor calibration allows user to input an electrical test signal into a connected sensor to simulate ground motion. The resulting digitized sensor output can then be analysed to assess various attributes of the sensor, such as basic functionality,
461 +frequency response and/or sensitivity stability over time. For a high-quality broadband sensor, these parameters typically remain stable over time, so that if the sensor initially meets manufacturer’s specifications and has not suffered damage,
462 +then calibration is usually not required. However, calibration can be a useful quality control check if it is suspected that the sensor may be defective or damaged after multiple deployments.
463 +
464 +(% class="box infomessage" %)
465 +(((
466 +NOTE: Not all sensors have this capability and user must refer to the manufacturer’s datasheet for clarification.
467 +)))
468 +
469 +=== Process ===
470 +
471 +The Centaur data recorder can generate and output an analog signal using a 16-bit internal digital-to analog converter (DAC). The DAC output is applied to the sensor for calibration purposes via the matching sensor cable. Make sure to use manufacturer cables as the correct signal lines have been connected to the correct pins of the mating connector. The Centaur CTR, CTR2 and CTR3 series models may generate signals of up to ±5 V amplitude, while the Centaur CTR4 series models have an enhanced calibration output.
472 +
473 +Calibration output signal actions are launched from the Waveform page in the Centaur Web interface. A synthetic waveform signal generator allows you to generate sinewave and pseudo-random binary (PRB) signals on demand. User can configure the sine frequency or PRB pulse width, signal duration and amplitude as well as specify lead-in and lead-out silence intervals before and after the calibration waveform. One can also select and play a calibration file containing any other desired digital time series waveform that by uploading it to the Centaur, such as a swept sinewave, step function, random noise, or chained PRB sequence.
474 +
475 +The following sample calibration files are supplied with the Centaur. These files may be used to visually verify functionality and approximate sensitivity of the sensor by inspection of the output waveform:
476 +
477 +* **sine_5V_30s** generates a 1 Hz sine wave with 5 V amplitude lasting 30 seconds.
478 +* **step_0V_to_5V_15s** generates a 0 V signal for 15 seconds followed by a positive 5 V step function lasting 15 seconds.
479 +* **prb 1V 20ms 10min** generates a 10 minute PRB sequence using 20 ms pulses and 1 V amplitude.
480 +* **prb 1V 5s 150min** generates a 2.5 hour PRB sequence using 5 second pulses and 1 V amplitude.
481 +* **prb 2V 5s 8hr** generates an 8 hour PRB sequence using 5 s pulses and 2 V amplitude.
482 +
483 +=== Procedure ===
484 +
485 +1. Log-in to the Centaur Web Interface and use the Admin credentials
486 +1. Navigate to the Health page and verify that the sensor is properly levelled and recognised by its serial number.
487 +1. To configure the calibration parameters, navigate to the Waveform page.
488 +1. From the Calibration panel at the top page, select Type from the drop-down list and  choose Sine.
489 +1. For the CTR4 series models, additional option to select between Voltage or Current is available.
490 +1. Click on the Configure button to access the calibration dialog box for the selected Playback.
491 +1. Configure the signal characteristics by selecting 5V, 30 sec with gain of 1.
492 +1. Configure the padding before and after the calibration signal, enter 5 seconds.
493 +1. The Duration (s) time can be made shorter or longer as required by user. NOTE, for shorter frequencies a longer duration will be required for the signal to complete its full cycle and to capture the entire waveform on the screen.
494 +1. Click OK button to close the dialog box and save the settings.
495 +1. Click the start calibration button  [[image:1733178329484-829.png]] to begin the process. Approximately 5 seconds of time padding ( as set in Step 8) will past before the sensor responds to the injected signal and display the sine wave feedback response.
496 +1. The calibration will end after 30 seconds (as set in Step 7) or can be terminated manually by pressing the stop button. The calibration will then stop after 5 seconds and any configured lead out silence will be skipped.
497 +1. Click on the pause button on the bottom of the page to stop the live stream and use the arrows to centre the sine signal response. Note that the screen waveform will turn Blue and the stream will freeze. Avoid capturing live streaming signal!
498 +1. Once the response signal is cantered, perform a screen-capture “Print Screen” button or use “Snippet” tool and save the captured image locally. In the nametag, include a Serial number, date and sensor type.
499 +1. Archive and back-up the file.
500 +
459 459  == ... via data comparision (vs S1.AUANU) ==
460 460  
461 461  CODE & Guide to use code
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582 582  
583 583  Inside the “Vrl (Theoretical)” cell enter the following formula using the corresponding cells.
584 584  
585 -[Equation]
627 +V_{RL}=I_{oc}\times R_L
586 586  
587 587  
588 588  Inside the “Rated Power” cell enter the following formula using the corresponding cells.
589 589  
590 -[Equation]
632 +P_{oc}=V_{oc}\times I_{oc}
591 591  
592 592  
593 593  Inside the “Load Power” cell enter the following formula using the corresponding cells.
594 594  
595 -[Equation]
637 +P_{RL}=\frac{V_{RL}}{R_L}\times V_{oc}
596 596  
597 597  
598 598  Inside the “Power Loss %” cell enter the following formula using the corresponding cells.
599 599  
600 -The calculated values that are negative represent power loss, and positive values are power gain. Performing “conditional formatting” on these cells with colour gradient (defined by colour break limits) would yield visually easy to recognise defective panels. 
642 +The calculated values that are negative represent power loss, and positive values are power gain. Performing “conditional formatting” on these cells with colour gradient (defined by colour break limits) would yield visually easy to recognise defective panels.
601 601  
602 602  
603 -[Equation]
645 +Power\ Loss\ \%=\frac{P_{RL}}{P_{oc}}\times 100-100
604 604  
605 605  
606 606  Perform all the calculations for each solar panel ID entered.
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