Last modified by Mengting Qiu on 2024/04/02 16:44
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From version < 115.3 >
edited by Xiaoling
on 2022/07/09 16:59
To version < 114.1 >
edited by Xiaoling
on 2022/07/09 16:11
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41 41  
42 42  == 1.2 ​ Features ==
43 43  
44 +
44 44  * NB-IoT Bands: B1/B3/B8/B5/B20/B28 @H-FDD
45 45  * Monitor Temperature & Humidity via SHT31
46 46  * AT Commands to change parameters
... ... @@ -54,7 +54,6 @@
54 54  
55 55  
56 56  
57 -
58 58  == 1.3  Specification ==
59 59  
60 60  
... ... @@ -83,7 +83,6 @@
83 83  
84 84  
85 85  
86 -
87 87  == ​1.4  Applications ==
88 88  
89 89  * Smart Buildings & Home Automation
... ... @@ -132,6 +132,8 @@
132 132  1. Send an uplink packet
133 133  
134 134  
134 +
135 +
135 135  = 2.  Use N95S31B to communicate with IoT Server =
136 136  
137 137  == 2.1  How it works ==
... ... @@ -175,6 +175,7 @@
175 175  * The local NB-IoT network used the band that N95S31B supports.
176 176  * Your operator is able to distribute the data received in their NB-IoT network to your IoT server.
177 177  
179 +
178 178  Below figure shows our testing structure. Here we have NB-IoT network coverage by China Mobile, the band they use is B8.
179 179  
180 180  N95S31B supports different communication protocol such as :
... ... @@ -307,8 +307,8 @@
307 307  * (% style="color:blue" %)**AT+CLIENT=CLIENT       ** (%%)~/~/Set up the CLIENT of MQTT
308 308  * (% style="color:blue" %)**AT+UNAME=UNAME                                **(%%)~/~/Set the username of MQTT
309 309  * (% style="color:blue" %)**AT+PWD=PWD                                         **(%%)~/~/Set the password of MQTT
310 -* (% style="color:blue" %)**AT+PUBTOPIC=f9527                               **(%%)~/~/Set the sending topic of MQTT
311 -* (% style="color:blue" %)**AT+SUBTOPIC=Ns9527          **(%%) ~/~/Set the subscription topic of MQTT
312 +* (% style="color:blue" %)**AT+PUBTOPIC=f9527  **(%%)~/~/Set the sending topic of MQTT
313 +* (% style="color:blue" %)**AT+SUBTOPIC=Ns9527  **(%%) ~/~/Set the subscription topic of MQTT
312 312  
313 313  [[image:1657352634421-276.png]]
314 314  
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354 354  
355 355  == 2.3  Uplink Payload ==
356 356  
359 +In this mode, uplink payload includes in total 14 bytes
357 357  
358 -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.
359 359  
360 -
361 -For example:
362 -
363 - (% 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.
364 -
365 -
366 -The uplink payloads are composed in  ASCII String. For example:
367 -
368 -0a cd 00 ed 0a cc 00 00 ef 02 d2 1d (total 24 ASCII Chars) . Representative the actually payload:
369 -
370 -0x 0a cd 00 ed 0a cc 00 00 ef 02 d2 1d Total 12 bytes
371 -
372 -
373 -(% style="color:red" %)**NOTE:**
374 -
375 -(% style="color:red" %)
376 -1. All modes share the same Payload Explanation from [[HERE>>path:#Payload_Explain]].
377 -1. By default, the device will send an uplink message every 1 hour.
378 -
379 -
380 -
381 -=== 2.3.1  Payload Analyze ===
382 -
383 -N95S31B uplink payload includes in total 21 bytes
384 -
385 -
386 386  (% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:440px" %)
387 387  |=(% style="width: 60px;" %)(((
388 388  **Size(bytes)**
389 -)))|=(% 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**
390 -|(% 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" %)(((
391 -Reserve/ Same as NBSN95 CFGMOD=1
365 +)))|=(% style="width: 60px;" %)**6**|=(% style="width: 35px;" %)2|=(% style="width: 35px;" %)**2**|=(% style="width: 80px;" %)**1**|=(% style="width: 100px;" %)**2**|=(% style="width: 60px;" %)**1**
366 +|(% 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"]]
392 392  
393 -No function here.
394 -)))|(% style="width:77px" %)(((
395 -[[Temperature >>||anchor="H2.4.5A0Distance"]]
368 +(((
369 +If we use the MQTT client to subscribe to this MQTT topic, we can see the following information when the NDDS751 uplink data.
370 +)))
396 396  
397 -By SHT31
398 -)))|(% style="width:80px" %)(((
399 -[[Humidity>>||anchor="H2.4.6A0DigitalInterrupt"]]
400 400  
401 -By SHT31
373 +[[image:1657331036973-987.png]]
374 +
375 +(((
376 +The payload is ASCII string, representative same HEX:
402 402  )))
403 403  
404 404  (((
405 -(((
406 -If we use the MQTT client to subscribe to this MQTT topic, we can see the following information when the NB sensor uplink data.
380 +0x72403155615900640c6c19029200 where:
407 407  )))
382 +
383 +* (((
384 +Device ID: 0x724031556159 = 724031556159
408 408  )))
386 +* (((
387 +Version: 0x0064=100=1.0.0
388 +)))
409 409  
390 +* (((
391 +BAT: 0x0c6c = 3180 mV = 3.180V
392 +)))
393 +* (((
394 +Signal: 0x19 = 25
395 +)))
396 +* (((
397 +Distance: 0x0292= 658 mm
398 +)))
399 +* (((
400 +Interrupt: 0x00 = 0
410 410  
411 -[[image:1657354294009-643.png]]
412 412  
413 413  
414 -The payload is ASCII string, representative same HEX: 0x724031607457006e0ccd1b0100dc000ccc00e10186 where:
415 -
416 -* Device ID: 0x724031607457 = 724031607457
417 -* Version: 0x006e=110=1.1.0
418 -
419 -* BAT: 0x0ccd = 3277 mV = 3.277V
420 -* Signal: 0x1b = 27
421 -* Model: 0x01 = 1
422 -* 0x00dc000ccc= reserve, ignore in N95S31B
423 -* Temperature by SHT31: 0x00e1 = 225 = 22.5 °C
424 -* Humidity by SHT31: 0x0186 = 390 = 39.0 %rh
425 -
426 -(((
427 427  
428 428  )))
429 429  
430 -(((
431 -
432 -)))
407 +== 2.4  Payload Explanation and Sensor Interface ==
433 433  
434 434  
435 -=== 2.3.2  Device ID ===
410 +=== 2.4.1  Device ID ===
436 436  
437 437  (((
438 438  By default, the Device ID equal to the last 6 bytes of IMEI.
... ... @@ -456,25 +456,20 @@
456 456  
457 457  
458 458  
459 -=== 2.3.3  Version Info ===
434 +=== 2.4.2  Version Info ===
460 460  
436 +(((
437 +Specify the software version: 0x64=100, means firmware version 1.00.
438 +)))
461 461  
462 -These bytes include the hardware and software version.
463 -
464 -Higher byte: Specify hardware version: always 0x00 for N95S31B
465 -
466 -Lower byte: Specify the software version: 0x6E=110, means firmware version 110
467 -
468 -
469 -For example: 0x00 6E: this device is N95S31B with firmware version 110.
470 -
471 471  (((
472 -
441 +For example: 0x00 64 : this device is NDDS75 with firmware version 1.0.0.
473 473  )))
474 474  
475 475  
476 -=== 2.3.4  Battery Info ===
477 477  
446 +=== 2.4.3  Battery Info ===
447 +
478 478  (((
479 479  Ex1: 0x0B45 = 2885mV
480 480  )))
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485 485  
486 486  
487 487  
488 -=== 2.3.5  Signal Strength ===
458 +=== 2.4.4  Signal Strength ===
489 489  
490 490  (((
491 491  NB-IoT Network signal Strength.
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517 517  
518 518  
519 519  
520 -=== 2.3.6  Temperature & Humidity ===
490 +=== 2.4.5  Distance ===
521 521  
522 -The device will be able to get the SHT31 temperature and humidity data now and upload to IoT Server.
492 +Get the distance. Flat object range 280mm - 7500mm.
523 523  
524 -[[image:image-20220709161741-3.png]]
494 +(((
495 +For example, if the data you get from the register is **__0x0B 0x05__**, the distance between the sensor and the measured object is
496 +)))
525 525  
498 +(((
499 +(((
500 +(% style="color:blue" %)** 0B05(H) = 2821(D) = 2821mm.**
501 +)))
502 +)))
526 526  
527 -Convert the read byte to decimal and divide it by ten.
504 +(((
505 +
506 +)))
528 528  
508 +(((
509 +
510 +)))
529 529  
530 -**Example:**
512 +=== 2.4.6  Digital Interrupt ===
531 531  
532 -Temperature:  Read:00ec (H) = 236(D)  Value:  236 /10=23.6℃
514 +(((
515 +Digital Interrupt refers to pin (% style="color:blue" %)**GPIO_EXTI**(%%), and there are different trigger methods. When there is a trigger, the NDDS75 will send a packet to the server.
516 +)))
533 533  
534 -Humidity:    Read:0295(H)=661(D)    Value:  661 / 10=66.1, So 66.1%
518 +(((
519 +The command is:
520 +)))
535 535  
522 +(((
523 +(% style="color:blue" %)**AT+INTMOD=3 **(%%) ~/~/(more info about INMOD please refer [[**AT Command Manual**>>url:https://www.dragino.com/downloads/downloads/NB-IoT/NBSN95/DRAGINO_NBSN95-NB_AT%20Commands_v1.1.0.pdf]])**.**
524 +)))
536 536  
537 537  
527 +(((
528 +The lower four bits of this data field shows if this packet is generated by interrupt or not. Click here for the hardware and software set up.
529 +)))
530 +
531 +
532 +(((
533 +Example:
534 +)))
535 +
536 +(((
537 +0x(00): Normal uplink packet.
538 +)))
539 +
540 +(((
541 +0x(01): Interrupt Uplink Packet.
542 +)))
543 +
544 +
545 +
546 +=== 2.4.7  ​+5V Output ===
547 +
548 +(((
549 +NDDS75 will enable +5V output before all sampling and disable the +5v after all sampling. 
550 +)))
551 +
552 +
553 +(((
554 +The 5V output time can be controlled by AT Command.
555 +)))
556 +
557 +(((
558 +(% style="color:blue" %)**AT+5VT=1000**
559 +)))
560 +
561 +(((
562 +Means set 5V valid time to have 1000ms. So the real 5V output will actually have 1000ms + sampling time for other sensors.
563 +)))
564 +
565 +
566 +
538 538  == 2.5  Downlink Payload ==
539 539  
540 540  By default, NDDS75 prints the downlink payload to console port.
image-20220709161741-3.png
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