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Last modified by Karry Zhuang on 2025/07/03 11:59
From version 143.1
edited by Karry Zhuang
on 2024/04/30 17:05
Change comment: There is no comment for this version
To version 130.3
edited by Karry Zhuang
on 2024/04/30 16:39
Change comment: There is no comment for this version

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396 396  
397 397  To get the AIS current image on the PC, you can issue commands through TTN or connect AIS to your PC with TTL to send commands through the serial port to obtain relevant data packets.
398 398  
399 -=== 3.2.1 The image date are obtained by TTN ===
399 +=== 3.2.1 The image packets are obtained by TTN ===
400 400  
401 401  Make sure that node ACK is on: AT+PNACKMD=1 or 34 01
402 402  
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416 416  
417 417  Example of the first payload（FPort=3）：663095C00BBE1000FFD8FFE000104A46494600010101004800480000FFDB0043001B12141714111B1716171E1C1B2028422B28252528513A3D3042605565645F555D5B6A7899816A7190735B5D85B586909EA3ABADAB6780BCC9BAA6C799A8ABA4FFDB0043011C1E1E2823284E2B2B4EA46E5D6EA4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4FFC0000B0800F0014001012200FFC4001F00000105010101010101000000000000000001020304050607
418 418  
419 -==== ====
420 -
421 421  ==== 3.2.1.1sysTimeCurrent ====
422 422  
423 423  These four bytes contain the year, month, day, hour, minute, and second of the time.
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442 442  
443 443  **Ex**：0X0BBE= 3006 mv
444 444  
443 +==== ====
444 +
445 445  ==== 3.2.1.3 total_packages ====
446 446  
447 447  This byte represents the total number of packets for the image fetched this time.
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448 448  
449 449  [[image:image-20240430163626-9.png||height="47" width="1116"]]
450 450  
451 +==== ====
452 +
451 451  ==== 3.2.1.4 subcontracting_count ====
452 452  
453 453  This byte represents the data number of the image packet retrieved
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457 457  
458 458  ==== 3.2.1.5 Image_date ====
459 459  
460 -Apart from the eight bytes mentioned above, the next 200 bytes are all image data.
461 461  
462 -Example the first packet：663095C00BBE1000FFD8FFE000104A46494600010101004800480000FFDB0043001B12141714111B1716171E1C1B2028422B28252528513A3D3042605565645F555D5B6A7899816A7190735B5D85B586909EA3ABADAB6780BCC9BAA6C799A8ABA4FFDB0043011C1E1E2823284E2B2B4EA46E5D6EA4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4FFC0000B0800F0014001012200FFC4001F00000105010101010101000000000000000001020304050607
463 463  
464 -Image_date=FFD8FFE000104A46494600010101004800480000FFDB0043001B12141714111B1716171E1C1B2028422B28252528513A3D3042605565645F555D5B6A7899816A7190735B5D85B586909EA3ABADAB6780BCC9BAA6C799A8ABA4FFDB0043011C1E1E2823284E2B2B4EA46E5D6EA4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4FFC0000B0800F0014001012200FFC4001F00000105010101010101000000000000000001020304050607
465 465  
466 466  
467 -==== 3.2.1.6 Combined image ====
468 468  
469 -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.
470 470  
471 -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.
472 472  
473 -Open WinHex to open the combined image data file.
474 474  
475 -[[image:1714467040612-103.png||height="134" width="649"]]
476 -
477 -Click on the edit option to choose and convert.
478 -
479 -[[image:1714467065723-178.png||height="349" width="762"]]
480 -
481 -Choose the Hex ASCII->Binary option and then click OK.
482 -
483 -[[image:1714467089355-837.png||height="366" width="336"]]
484 -
485 -After the conversion is finished, click on "File" and choose "Save As".
486 -
487 -[[image:1714467112365-676.png]]
488 -
489 -Save as a.jpg file and click OK to generate a JPG file.
490 -
491 -[[image:1714467126476-110.png]]
492 -
493 -Open the saved JPG file to display the image transmitted by the AIS Sensor through the serial port.
494 -
495 -[[image:1714467134950-189.png]]
496 -
497 -=== 3.2.2 The image date are obtained by serial port ===
498 -
499 -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
500 -
501 -
502 -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
503 -
504 -
505 -Then follow the instructions in 3.2.1.6 to get the image from AIS Sensor.
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