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Last modified by Karry Zhuang on 2025/07/03 11:59
From version 97.2
edited by Karry Zhuang
on 2024/04/28 18:01
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To version 113.1
edited by Karry Zhuang
on 2024/04/30 15:17
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27 27  
28 28  === 2.1.2 Fix Sensor to a Water Meter ===
29 29  
30 -The assembly necessitates the use of two screws, two spacers, and this specific device. Additionally, there are AIS Sensors available along with TTL adapters for AIS Sensors.
30 +The assembly necessitates the use of two screws, two spacers, and this specific device.
31 31  
32 +Additionally, there are AIS Sensors available along with AUC USB TTL adapters for AIS Sensors.
33 +
32 32  The fixture below is just a demo, user might adjust it with their water meter. Here is the STEP file for the fixture as below: [[Water Meter Fixture Demo>>https://www.dropbox.com/scl/fo/p1ykgysrv8p454swsh4zj/AHCYr5pcOM0WNad4fT1sf_I?rlkey=7x964q1tuvh0ezbhgxb9b2zqg&st=wxxq87t3&dl=0]].
33 33  
34 34  [[image:image-20240428163842-3.png||height="425" width="609"]] [[image:image-20240428155254-1.png||height="424" width="358"]]
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134 134  
135 135  You can utilize a couple of pea clips or other suitable fixtures to securely fasten the AIS sensor and ensure precise alignment of the camera with the digital watch wheel.
136 136  
137 -[[image:image-20240428180114-11.png||height="705" width="536"]]
139 +[[image:image-20240429091325-1.png||height="706" width="535"]]
138 138  
139 139  === 2.2.3 Calibration ===
140 140  
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212 212  
213 213  You can utilize a couple of pea clips or other suitable fixtures to securely fasten the AIS sensor and ensure precise alignment of the camera with the digital watch wheel.
214 214  
215 -[[image:image-20240428175925-10.jpeg||height="529" width="397"]]
217 +[[image:image-20240429092436-2.png||height="676" width="519"]]
216 216  
219 +
217 217  === 2.3.3 Calibration ===
218 218  
219 219  Perform a power reset on the EVB board, making sure to close the ota.exe program before opening HMX_FT4222H_GUI.exe.
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277 277  
278 278  After the calibration process is completed, it can be observed that the obtained reading aligns consistently with the numerical value displayed on the digital wheel dial.
279 279  
283 +[[image:1714358288601-933.png]]
280 280  
281 281  == 2.4 Digital wheel dial take point coordinate diagram ==
282 282  
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305 305  
306 306  == (% title="Click and drag to resize" %)3.1 Get Digital Reading After Calibration(%%) ==
307 307  
312 +This section shows an example for how to join the [[TheThingsNetwork>>url:https://www.thethingsnetwork.org/]] LoRaWAN IoT server. Usages with other LoRaWAN IoT servers are of similar procedure.
308 308  
314 +
315 +Assume the DLOS8 is already set to connect to [[TTN V3 network >>url:https://eu1.cloud.thethings.network/]]. We need to add the AIS Sensor device in TTN V3 portal. 
316 +
317 +**Step 1**:  Create a device in TTN V3 with the OTAA keys from AIS Sensor.
318 +
319 +Each AIS Sensor is shipped with a sticker with the default DEV EUI as below:
320 +
321 +[[image:image-20230426083617-1.png||height="294" width="633"]]
322 +
323 +Enter these keys in the LoRaWAN Server portal. Below is TTN V3 screen shot:
324 +
325 +Add APP EUI in the application.
326 +
327 +choose to create the device manually.
328 +
329 +Add APP KEY and DEV EUI
330 +
331 +[[image:image-20220522232916-3.png||_mstalt="430495" _mstvisible="3"]]
332 +
333 +[[image:1655776122894-257.png]]
334 +
335 +**Default mode OTAA**
336 +
337 +
338 +
339 +
340 +[[image:1655776241177-240.png]]
341 +
342 +**Step 2**:  Use ACT button to activate LHT52 and it will auto join to the TTN V3 network. After join success, it will start to upload sensor data to TTN V3 and user can see in the panel.
343 +
344 +=== 3.1.1 Uplink Payload (Fport~=5) ===
345 +
346 +The uplink payload includes totally 14 bytes. Uplink packets use FPORT=5 and (% style="color:#4472c4" %)**every 20 minutes**(%%) send one uplink by default.
347 +
348 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:370px" %)
349 +|=(% style="width: 60px;background-color:#4F81BD;color:white" %)**Size(bytes)(% style="display:none" %) (%%)**|=(% style="width: 60px;background-color:#4F81BD;color:white" %)2|=(% style="width: 80px;background-color:#4F81BD;color:white" %)4|=(% style="width: 80px;background-color:#4F81BD;color:white" %)4|=(% style="width: 60px;background-color:#4F81BD;color:white" %)4
350 +|(% style="width:99px" %)Value|(% style="width:62px" %)BAT|sysTimeCurrent|Integer|Decimal
351 +
352 +[[image:1714374026505-898.png||height="200" width="736"]]
353 +
354 +Payload Example（FPort=5）：(% style="background-color:yellow" %)**0D 32 66 29 AF E0 00 00 00 02 00 05 E3 B0**
355 +
356 +=== 3.1.2 BAT- Battery information ===
357 +
358 +These two bytes of BAT include the battery state and the actual voltage.
359 +
360 +**Ex**：0x0B32 = 3378mV
361 +
362 +=== 3.1.3 sysTimeCurrent ===
363 +
364 +These four bytes contain the year, month, day, hour, minute, and second of the time.
365 +
366 +AI Sensor use Unix TimeStamp format based on
367 +
368 +[[image:1714374373681-339.png||height="81" width="527"]]
369 +
370 +Users can get this time from the link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/]] :
371 +
372 +Below is the converter example
373 +
374 +**Ex**：6629AFE0=2024-04-25 01:20:32
375 +
376 +[[image:1714374389825-148.png||height="313" width="428"]][[image:1714374398047-940.png||height="214" width="508"]]
377 +
378 +So, we can use AT+TIMESTAMP=1714012723 or downlink 6629C233 to set the current time 2024 – April ~-~- 25 Thursday 02:38:41
379 +
380 +=== 3.1.4 Integer ===
381 +
382 +These four bytes display the integers in the digital wheel face
383 +
384 +[[image:file:///C:/Users/zzccc/AppData/Local/Temp/msohtmlclip1/01/clip_image002.jpg]][[image:1714374445395-196.png]]
385 +
386 +Read table integer：0x00000002=2
387 +
388 +=== 3.1.5 Decimal ===
389 +
390 +These four bytes display decimals on the digital wheel.
391 +
392 +[[image:1714374493101-914.png]][[image:file:///C:/Users/zzccc/AppData/Local/Temp/msohtmlclip1/01/clip_image002.jpg]]
393 +
394 +Read table decimals：0x005E3B0/1000000= 0.385968
395 +
396 +
309 309  == (% title="Click and drag to resize" %)3.2 Get Image and show in PC(%%) ==
310 310  
399 +
400 +
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