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Last modified by Karry Zhuang on 2025/07/03 11:59
From version 140.1
edited by Karry Zhuang
on 2024/04/30 17:02
Change comment: There is no comment for this version
To version 119.3
edited by Karry Zhuang
on 2024/04/30 16:18
Change comment: There is no comment for this version

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398 398  
399 399  === 3.2.1 The image packets are obtained by TTN ===
400 400  
401 -Make sure that node ACK is on: AT+PNACKMD=1 or 34 01
401 +In TTN, make sure that node ACK is on: AT+PNACKMD=1 or 34 01
402 402  
403 403  Then send the graph instruction 0B 01.
404 -
405 -The next time the AIS Sensor device runs at the set time, it will start collecting image data.
406 -
407 -[[image:1714465192126-772.png||height="478" width="678"]]
408 -
409 -The uplink payload includes totally 208 bytes. Uplink packets use FPORT=3
410 -
411 -(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:370px" %)
412 -|=(% style="width: 60px;background-color:#4F81BD;color:white" %)**Size(bytes)(% style="display:none" %) (%%)**|=(% style="width: 60px;background-color:#4F81BD;color:white" %)4|=(% style="width: 80px;background-color:#4F81BD;color:white" %)2|=(% style="width: 80px;background-color:#4F81BD;color:white" %)1|=(% style="width: 60px;background-color:#4F81BD;color:white" %)1|=(% style="width: 80px;background-color:#4F81BD;color:white" %)200
413 -|(% style="width:99px" %)Value|(% style="width:62px" %)sysTimeCurrent|BAT|total_packages|subcontracting_count|Image_date
414 -
415 -[[image:1714465532892-179.png||height="250" width="586"]]
416 -
417 -Example of the first payload（FPort=3）：663095C00BBE1000FFD8FFE000104A46494600010101004800480000FFDB0043001B12141714111B1716171E1C1B2028422B28252528513A3D3042605565645F555D5B6A7899816A7190735B5D85B586909EA3ABADAB6780BCC9BAA6C799A8ABA4FFDB0043011C1E1E2823284E2B2B4EA46E5D6EA4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4FFC0000B0800F0014001012200FFC4001F00000105010101010101000000000000000001020304050607
418 -
419 -(% class="wikigeneratedid" %)
420 -==== ====
421 -
422 -==== 3.2.1.1sysTimeCurrent ====
423 -
424 -These four bytes contain the year, month, day, hour, minute, and second of the time.
425 -
426 -AI Sensor use Unix TimeStamp format based on.
427 -
428 -[[image:1714465658414-905.png||height="85" width="553"]]
429 -
430 -Users can get this time from the link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/]] :
431 -
432 -Below is the converter example
433 -
434 -EX: 663095C0=2024-04-30 06:54:57.
435 -
436 -[[image:image-20240430162820-5.png||height="218" width="532"]]
437 -
438 -(% class="wikigeneratedid" %)
439 -==== ====
440 -
441 -==== 3.2.1.2 BAT- Battery information ====
442 -
443 -These two bytes of BAT include the battery state and the actual voltage.
444 -
445 -[[image:image-20240430163600-8.png||height="50" width="1141"]]
446 -
447 -**Ex**：0X0BBE= 3006 mv
448 -
449 -==== ====
450 -
451 -==== 3.2.1.3 total_packages ====
452 -
453 -This byte represents the total number of packets for the image fetched this time.
454 -
455 -[[image:image-20240430163626-9.png||height="47" width="1116"]]
456 -
457 -==== ====
458 -
459 -==== 3.2.1.4 subcontracting_count ====
460 -
461 -This byte represents the data number of the image packet retrieved
462 -
463 -[[image:image-20240430163738-10.png||height="44" width="1117"]]
464 -
465 -
466 -==== 3.2.1.5 Image_date ====
467 -
468 -Apart from the eight bytes mentioned above, the next 200 bytes are all image data.
469 -
470 -Example the first packet：663095C00BBE1000FFD8FFE000104A46494600010101004800480000FFDB0043001B12141714111B1716171E1C1B2028422B28252528513A3D3042605565645F555D5B6A7899816A7190735B5D85B586909EA3ABADAB6780BCC9BAA6C799A8ABA4FFDB0043011C1E1E2823284E2B2B4EA46E5D6EA4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4FFC0000B0800F0014001012200FFC4001F00000105010101010101000000000000000001020304050607
471 -
472 -Image_date=FFD8FFE000104A46494600010101004800480000FFDB0043001B12141714111B1716171E1C1B2028422B28252528513A3D3042605565645F555D5B6A7899816A7190735B5D85B586909EA3ABADAB6780BCC9BAA6C799A8ABA4FFDB0043011C1E1E2823284E2B2B4EA46E5D6EA4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4FFC0000B0800F0014001012200FFC4001F00000105010101010101000000000000000001020304050607
473 -
474 -
475 -==== 3.2.1.6 Combined image ====
476 -
477 -Once all the data has been uploaded to the TTN platform, the subsequent step involves concatenating each packet in sequential order and saving it into a new TXT file. It is important to note that the first 8 bytes of each packet should be removed before concatenation.
478 -
479 -When you combine all the packets, you need to convert the data inside to binary. Here the conversion is demonstrated using the [[WinHex>>http://www.x-ways.net/winhex/index-m.html]] software.
480 -
481 -Open WinHex to open the combined image data file.
482 -
483 -[[image:1714467040612-103.png||height="134" width="649"]]
484 -
485 -Click on the edit option to choose and convert.
486 -
487 -[[image:1714467065723-178.png||height="349" width="762"]]
488 -
489 -Choose the Hex ASCII->Binary option and then click OK.
490 -
491 -[[image:1714467089355-837.png||height="366" width="336"]]
492 -
493 -After the conversion is finished, click on "File" and choose "Save As".
494 -
495 -[[image:1714467112365-676.png]]
496 -
497 -Save as a.jpg file and click OK to generate a JPG file.
498 -
499 -[[image:1714467126476-110.png]]
500 -
501 -Open the saved JPG file to display the image transmitted by the AIS Sensor through the serial port.
502 -
503 -[[image:1714467134950-189.png]]
504 -
505 -=== 3.2.2 Get the current image packet by connecting the AUC USB TTL adapters for AIS Sensors to the AIS Sensor. ===
506 -
507 -Select the corresponding baud rate and serial port number through the serial port tool, select HEX display and HEX send, and continuously receive data from the AIS Sensor
508 -
509 -
510 -In the serial port to send data C0 5A 00 00 00 00 04, and then send C0 5A 00 00 00 00 09, AIS Sensor will send a real-time image of the data packet, and then stop sending. Start with FFD8 and put it in TXT file
511 -
512 -
513 -Then follow the instructions in 3.2.1.6 to get the image from AIS Sensor.
514 -
515 -
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