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Last modified by Karry Zhuang on 2025/07/03 11:59
From version 127.1
edited by Karry Zhuang
on 2024/04/30 16:35
Change comment: Uploaded new attachment "image-20240430163532-7.png", version {1}
To version 144.1
edited by Karry Zhuang
on 2024/05/06 16:54
Change comment: Uploaded new attachment "1714985699187-406.png", version {1}

Summary

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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 packets are obtained by TTN ===
399 +=== 3.2.1 The image date 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 +
419 419  ==== 3.2.1.1sysTimeCurrent ====
420 420  
421 421  These four bytes contain the year, month, day, hour, minute, and second of the time.
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432 432  
433 433  [[image:image-20240430162820-5.png||height="218" width="532"]]
434 434  
435 -=== BAT- Battery information ===
437 +==== 3.2.1.2 BAT- Battery information ====
436 436  
437 437  These two bytes of BAT include the battery state and the actual voltage.
438 438  
441 +[[image:image-20240430163600-8.png||height="50" width="1141"]]
442 +
439 439  **Ex**：0X0BBE= 3006 mv
440 440  
445 +==== 3.2.1.3 total_packages ====
441 441  
442 -=== total_packages ===
447 +This byte represents the total number of packets for the image fetched this time.
443 443  
444 -This byte represents the total number of packets for the image fetched this time
449 +[[image:image-20240430163626-9.png||height="47" width="1116"]]
445 445  
446 -
451 +==== 3.2.1.4 subcontracting_count ====
452 +
453 +This byte represents the data number of the image packet retrieved
454 +
455 +[[image:image-20240430163738-10.png||height="44" width="1117"]]
456 +
457 +
458 +==== 3.2.1.5 Image_date ====
459 +
460 +Apart from the eight bytes mentioned above, the next 200 bytes are all image data.
461 +
462 +Example the first packet：663095C00BBE1000FFD8FFE000104A46494600010101004800480000FFDB0043001B12141714111B1716171E1C1B2028422B28252528513A3D3042605565645F555D5B6A7899816A7190735B5D85B586909EA3ABADAB6780BCC9BAA6C799A8ABA4FFDB0043011C1E1E2823284E2B2B4EA46E5D6EA4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4FFC0000B0800F0014001012200FFC4001F00000105010101010101000000000000000001020304050607
463 +
464 +Image_date=FFD8FFE000104A46494600010101004800480000FFDB0043001B12141714111B1716171E1C1B2028422B28252528513A3D3042605565645F555D5B6A7899816A7190735B5D85B586909EA3ABADAB6780BCC9BAA6C799A8ABA4FFDB0043011C1E1E2823284E2B2B4EA46E5D6EA4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4A4FFC0000B0800F0014001012200FFC4001F00000105010101010101000000000000000001020304050607
465 +
466 +
467 +==== 3.2.1.6 Combined image ====
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 +
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 +
473 +Open WinHex to open the combined image data file.
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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