Last modified by Mengting Qiu on 2024/04/02 16:44
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From version < 107.1 >
edited by Xiaoling
on 2022/07/09 15:36
To version < 114.2 >
edited by Xiaoling
on 2022/07/09 16:12
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54 54  * 8500mAh Battery for long term use
55 55  
56 56  
57 -
58 58  == 1.3  Specification ==
59 59  
60 60  
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82 82  * Max boost current: 2A, 1 second
83 83  
84 84  
85 -
86 86  == ​1.4  Applications ==
87 87  
88 88  * Smart Buildings & Home Automation
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132 132  
133 133  
134 134  
135 -
136 136  = 2.  Use N95S31B to communicate with IoT Server =
137 137  
138 138  == 2.1  How it works ==
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176 176  * The local NB-IoT network used the band that N95S31B supports.
177 177  * Your operator is able to distribute the data received in their NB-IoT network to your IoT server.
178 178  
179 -
180 180  Below figure shows our testing structure. Here we have NB-IoT network coverage by China Mobile, the band they use is B8.
181 181  
182 182  N95S31B supports different communication protocol such as :
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211 211  
212 212  
213 213  
214 -=== 2.2.3 Connect USB – TTL to N95S31B to configure it ===
210 +=== 2.2.4  Connect USB – TTL to N95S31B to configure it ===
215 215  
216 216  (((
217 217  (((
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250 250  
251 251  
252 252  
253 -=== 2.2.4 Use CoAP protocol to uplink data ===
249 +=== 2.2.5  Use CoAP protocol to uplink data ===
254 254  
255 255  (% style="color:red" %)Note: if you don't have CoAP server, you can refer this link to set up one: (%%)[[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/Set%20up%20CoAP%20Server/>>http://wiki.dragino.com/xwiki/bin/view/Main/Set%20up%20CoAP%20Server/]]
256 256  
... ... @@ -270,10 +270,12 @@
270 270  )))
271 271  
272 272  (((
269 +
270 +
273 273  For parameter description, please refer to AT command set
274 274  )))
275 275  
276 -[[image:1657330452568-615.png]]
274 +[[image:1657352146020-183.png]]
277 277  
278 278  
279 279  (((
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280 280  After configure the server address and (% style="color:green" %)**reset the device**(%%) (via AT+ATZ ), NDDS75 will start to uplink sensor values to CoAP server.
281 281  )))
282 282  
283 -[[image:1657330472797-498.png]]
281 +[[image:1657352185396-303.png]]
284 284  
285 285  
286 286  
287 -=== 2.2.5 Use UDP protocol to uplink data(Default protocol) ===
285 +=== 2.2.6  Use UDP protocol to uplink data(Default protocol) ===
288 288  
289 289  
290 290  * (% style="color:blue" %)**AT+PRO=2   ** (%%) ~/~/ Set to use UDP protocol to uplink
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291 291  * (% style="color:blue" %)**AT+SERVADDR=120.24.4.116,5601   ** (%%) ~/~/ to set UDP server address and port
292 292  * (% style="color:blue" %)**AT+CFM=1       ** (%%) ~/~/ If the server does not respond, this command is unnecessary
293 293  
294 -[[image:1657330501006-241.png]]
292 +[[image:1657352391268-297.png]]
295 295  
296 296  
297 -[[image:1657330533775-472.png]]
295 +[[image:1657352403317-397.png]]
298 298  
299 299  
300 300  
301 -=== 2.2.6 Use MQTT protocol to uplink data ===
299 +=== 2.2.7  Use MQTT protocol to uplink data ===
302 302  
301 +N95S31B supports only plain MQTT now it doesn't support TLS and other related encryption.
303 303  
304 304  * (% style="color:blue" %)**AT+PRO=3   ** (%%) ~/~/Set to use MQTT protocol to uplink
305 305  * (% style="color:blue" %)**AT+SERVADDR=120.24.4.116,1883   ** (%%) ~/~/Set MQTT server address and port
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306 306  * (% style="color:blue" %)**AT+CLIENT=CLIENT       ** (%%)~/~/Set up the CLIENT of MQTT
307 307  * (% style="color:blue" %)**AT+UNAME=UNAME                                **(%%)~/~/Set the username of MQTT
308 308  * (% style="color:blue" %)**AT+PWD=PWD                                         **(%%)~/~/Set the password of MQTT
309 -* (% style="color:blue" %)**AT+PUBTOPIC=NDDS75_PUB                 **(%%)~/~/Set the sending topic of MQTT
310 -* (% style="color:blue" %)**AT+SUBTOPIC=NDDS75_SUB          **(%%) ~/~/Set the subscription topic of MQTT
308 +* (% style="color:blue" %)**AT+PUBTOPIC=f9527                               **(%%)~/~/Set the sending topic of MQTT
309 +* (% style="color:blue" %)**AT+SUBTOPIC=Ns9527          **(%%) ~/~/Set the subscription topic of MQTT
311 311  
312 -[[image:1657249978444-674.png]]
311 +[[image:1657352634421-276.png]]
313 313  
314 314  
315 -[[image:1657330723006-866.png]]
314 +[[image:1657352645687-385.png]]
316 316  
316 +(((
317 +To save battery life, N95S31B will establish a subscription before each uplink and close the subscription 3 seconds after uplink successful. Any downlink commands from server will only arrive during the subscription period.
318 +)))
317 317  
320 +
318 318  (((
319 -MQTT protocol has a much higher power consumption compare vs UDP / CoAP protocol. Please check the power analyze document and adjust the uplink period to a suitable interval.
322 +MQTT protocol has a much high-power consumption compare vs UDP / CoAP protocol. Please check the power analyze document and adjust the uplink period to a suitable interval.
320 320  )))
321 321  
322 322  
323 323  
324 -=== 2.2.7 Use TCP protocol to uplink data ===
327 +=== 2.2.8  Use TCP protocol to uplink data ===
325 325  
329 +This feature is supported since firmware version v110
326 326  
327 327  * (% style="color:blue" %)**AT+PRO=4   ** (%%) ~/~/ Set to use TCP protocol to uplink
328 328  * (% style="color:blue" %)**AT+SERVADDR=120.24.4.116,5600   **(%%) ~/~/ to set TCP server address and port
329 329  
330 -[[image:image-20220709093918-1.png]]
334 +[[image:1657352898400-901.png]]
331 331  
332 332  
333 -[[image:image-20220709093918-2.png]]
337 +[[image:1657352914475-252.png]]
334 334  
335 335  
336 336  
337 -=== 2.2.8 Change Update Interval ===
341 +=== 2.2.9  Change Update Interval ===
338 338  
339 339  User can use below command to change the (% style="color:green" %)**uplink interval**.
340 340  
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341 341  * (% style="color:blue" %)**AT+TDC=600      ** (%%)~/~/ Set Update Interval to 600s
342 342  
343 343  (((
344 -(% style="color:red" %)**NOTE:**
348 +
345 345  )))
346 346  
347 -(((
348 -(% style="color:red" %)1. By default, the device will send an uplink message every 1 hour.
349 -)))
350 350  
351 351  
352 -
353 353  == 2.3  Uplink Payload ==
354 354  
355 -In this mode, uplink payload includes in total 14 bytes
356 356  
356 +NBSN95 has different working mode for the connections of different type of sensors. This section describes these modes. User can use the AT Command (% style="color:blue" %)**AT+MOD**(%%) to set NBSN95 to different working modes.
357 357  
358 +
359 +For example:
360 +
361 + (% style="color:blue" %)**AT+CFGMOD=2 ** (%%)~/~/will set the NBSN95 to work in MOD=2 distance mode which target to measure distance via Ultrasonic Sensor.
362 +
363 +
364 +The uplink payloads are composed in  ASCII String. For example:
365 +
366 +0a cd 00 ed 0a cc 00 00 ef 02 d2 1d (total 24 ASCII Chars) . Representative the actually payload:
367 +
368 +0x 0a cd 00 ed 0a cc 00 00 ef 02 d2 1d Total 12 bytes
369 +
370 +
371 +(% style="color:red" %)**NOTE:**
372 +
373 +(% style="color:red" %)
374 +1. All modes share the same Payload Explanation from [[HERE>>path:#Payload_Explain]].
375 +1. By default, the device will send an uplink message every 1 hour.
376 +
377 +
378 +
379 +
380 +=== 2.3.1  Payload Analyze ===
381 +
382 +N95S31B uplink payload includes in total 21 bytes
383 +
384 +
358 358  (% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:440px" %)
359 359  |=(% style="width: 60px;" %)(((
360 360  **Size(bytes)**
361 -)))|=(% style="width: 60px;" %)**6**|=(% style="width: 35px;" %)2|=(% style="width: 35px;" %)**2**|=(% style="width: 80px;" %)**1**|=(% style="width: 100px;" %)**2**|=(% style="width: 60px;" %)**1**
362 -|(% style="width:97px" %)**Value**|(% style="width:83px" %)[[Device ID>>||anchor="H2.4.1A0A0DeviceID"]]|(% style="width:41px" %)[[Ver>>||anchor="H2.4.2A0VersionInfo"]]|(% style="width:46px" %)[[BAT>>||anchor="H2.4.3A0BatteryInfo"]]|(% style="width:123px" %)[[Signal Strength>>||anchor="H2.4.4A0SignalStrength"]]|(% style="width:120px" %)[[Distance (unit: mm)>>||anchor="H2.4.5A0Distance"]]|(% style="width:80px" %)[[Interrupt>>||anchor="H2.4.6A0DigitalInterrupt"]]
388 +)))|=(% style="width: 60px;" %)**6**|=(% style="width: 35px;" %)2|=(% style="width: 35px;" %)**2**|=(% style="width: 80px;" %)**1**|=(% style="width: 80px;" %) |=(% style="width: 99px;" %) |=(% style="width: 77px;" %)**2**|=(% style="width: 60px;" %)**1**
389 +|(% style="width:97px" %)**Value**|(% style="width:83px" %)[[Device ID>>||anchor="H2.4.1A0A0DeviceID"]]|(% style="width:41px" %)[[Ver>>||anchor="H2.4.2A0VersionInfo"]]|(% style="width:46px" %)[[BAT>>||anchor="H2.4.3A0BatteryInfo"]]|(% style="width:123px" %)[[Signal Strength>>||anchor="H2.4.4A0SignalStrength"]]|(% style="width:123px" %)MOD 0X01|(% style="width:99px" %)(((
390 +Reserve/ Same as NBSN95 CFGMOD=1
363 363  
392 +No function here.
393 +)))|(% style="width:77px" %)(((
394 +[[Temperature >>||anchor="H2.4.5A0Distance"]]
395 +
396 +By SHT31
397 +)))|(% style="width:80px" %)(((
398 +[[Humidity>>||anchor="H2.4.6A0DigitalInterrupt"]]
399 +
400 +By SHT31
401 +)))
402 +
364 364  (((
365 -If we use the MQTT client to subscribe to this MQTT topic, we can see the following information when the NDDS751 uplink data.
404 +(((
405 +If we use the MQTT client to subscribe to this MQTT topic, we can see the following information when the NB sensor uplink data.
366 366  )))
407 +)))
367 367  
368 368  
369 -[[image:1657331036973-987.png]]
410 +[[image:1657354294009-643.png]]
370 370  
371 371  (((
372 372  The payload is ASCII string, representative same HEX:
1657352391268-297.png
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