Last modified by Mengting Qiu on 2024/04/02 17:03
<
From version < 88.2 >
edited by Xiaoling
on 2022/12/09 09:14
To version < 83.3 >
edited by Xiaoling
on 2022/12/08 09:33
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1 1  (% style="text-align:center" %)
2 -[[image:LMDS200_10.jpg||height="572" width="572"]]
2 +[[image:LMDS200_10.jpg]]
3 3  
4 4  
5 -
6 -
7 -
8 -(% style="display:none" %) (%%)
9 -
10 -
11 -
12 -
13 -
14 14  **Table of Contents：**
15 15  
16 -{{toc/}}
17 17  
18 18  
19 19  
20 20  
21 -
22 -
23 -
24 -
25 -
26 26  = 1.  Introduction =
27 27  
28 28  == 1.1 ​ What is NMDS200 NB-IoT Microwave Radar Distance Sensor ==
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30 30  
31 31  (((
32 32  The Dragino NMDS200 is a(% style="color:blue" %)** NB-IoT Microwave Radar distance sensor**(%%). It uses (% style="color:blue" %)**24Ghz Microwave**(%%) to detect the distance between sensor and different objects. Compare vs ultrasonic or Lidar measurement method, Microwave Radar is (% style="color:blue" %)**more reliable for condensation / dusty environment**(%%). It can sense correct distance even there is water or thick dust on top of the sensor.
33 -)))
34 34  
35 -(((
36 36  The NMDS200 can be applied to scenarios such as horizontal distance measurement, parking management system, object proximity and presence detection, intelligent trash can management system, robot obstacle avoidance, automatic control, sewer, etc.
37 -)))
38 38  
39 -(((
40 40  NMDS200 can (% style="color:blue" %)**measure two distances**(%%): the closest object and next object behind the closest one.
41 -)))
42 42  
43 -(((
44 44  NMDS200 (% style="color:blue" %)**supports Alarm Feature**(%%), user can set the NMDS200 to uplink data in a short interval when the distance is out of configured range.
45 -)))
46 46  
47 -(((
48 48  NarrowBand-Internet of Things (NB-IoT) is a (% style="color:blue" %)**standards-based low power wide area (LPWA) technology**(%%) developed to enable a wide range of new IoT devices and services. NB-IoT significantly improves the power consumption of user devices, system capacity, and spectrum efficiency, especially in deep coverage.
49 -)))
50 50  
51 -(((
52 52  NMDS200 (% style="color:blue" %)**supports different uplink**(%%) methods including (% style="color:blue" %)**TCP, MQTT, UDP, and CoAP**(%%) for different application requirements.
53 -)))
54 54  
55 -(((
56 56  NMDS200 is powered by (% style="color:blue" %)**8500mAh Li-SOCI2 battery**,(%%) It is designed for long-term use of up to 5 years. (Actually Battery life depends on the use environment, update period & uplink method)
57 -)))
58 58  
59 -(((
60 60  To use NMDS200, user needs to check if there is NB-IoT coverage in the field and with the Nb-IoT bands that NMDS200 supports. If local operator support it, user needs to get a** (% style="color:blue" %)NB-IoT SIM card(%%)** from the operator and install into NMDS200 to get NB-IoT network connection.
61 61  )))
62 62  
... ... @@ -78,22 +78,18 @@
78 78  * Micro SIM card slot for NB-IoT SIM
79 79  * 8500mAh Battery for long-term use
80 80  
81 -
82 -
83 83  == 1.3 Radar probe specification ==
84 84  
85 85  
86 86  * Measuring Method: FMCW
87 -* Frequency: 24.000 ~~ 24.500 GHz
56 +* Frequency: 24.000 24.500 GHz
88 88  * Measurement output power: 6dBm
89 -* Measure range: 0.5 ~~ 20m
58 +* Measure range: 0.5 20m
90 90  * Accuracy: ±0.1m
91 91  * Resolution: 0.01m
92 92  * Horizontal Angel: 78°
93 93  * Vertical Angel: 23°
94 94  
95 -
96 -
97 97  == 1.4  Storage Temperature ==
98 98  
99 99  
... ... @@ -113,8 +113,6 @@
113 113  * Sewer
114 114  * Bottom water level monitoring
115 115  
116 -
117 -
118 118  == 1.6  Specification ==
119 119  
120 120  
... ... @@ -132,8 +132,6 @@
132 132  * B20 @H-FDD: 800MHz
133 133  * B28 @H-FDD: 700MHz
134 134  
135 -
136 -
137 137  == 1.7  Installation ==
138 138  
139 139  
... ... @@ -140,12 +140,10 @@
140 140  Sensor measure direction and angle is as below. When install the sensor, please make sure the sensor direct to object.
141 141  
142 142  
143 -[[image:image-20221207170748-1.png]]
106 +[[image:image-20221207170748-1.png]] [[image:image-20221207170748-2.png||height="366" width="672"]]
144 144  
145 145  
146 - [[image:image-20221207170748-2.png||height="345" width="634"]]
147 147  
148 -
149 149  == 1.8  Pin Definitions and Switch ==
150 150  
151 151  
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161 161  
162 162  The diagram below shows the working flow in the default firmware of NMDS200:
163 163  
164 -[[image:image-20221021110615-5.png||height="996" width="492"]]
125 +[[image:image-20221021110615-5.png]]
165 165  
166 166  
167 167  == 2.2 ​ Configure NMDS200 ==
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175 175  
176 176  Below figure shows our testing structure. Here we have NB-IoT network coverage by China Mobile, the band they use is B8.  The NMDS200 will use** (% style="color:red" %)CoAP(120.24.4.116:5683)(%%)** or raw (% style="color:red" %)**UDP(120.24.4.116:5601) **(%%)or (% style="color:red" %)**MQTT(120.24.4.116:1883) **(%%)or (% style="color:red" %)**TCP(120.24.4.116:5600)protocol**(%%) to send data to the test server.
177 177  
178 -[[image:image-20221209090938-1.png]]
139 +[[image:image-20221208090742-1.png]]
179 179  
180 180  
181 181  === 2.2.1 Insert NB-IoT SIM card ===
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224 224  (% style="color:red" %)**Note: the valid AT Commands can be found at:  **(%%)[[**https:~~/~~/www.dropbox.com/sh/351dwor6joz8nwh/AADn1BQaAAxLF_QMyU8NkW47a?dl=0**>>url:https://www.dropbox.com/sh/351dwor6joz8nwh/AADn1BQaAAxLF_QMyU8NkW47a?dl=0]]
225 225  
226 226  
188 +
227 227  === 2.2.3 Use CoAP protocol to uplink data ===
228 228  
229 229  
... ... @@ -240,7 +240,7 @@
240 240  
241 241  For parameter description, please refer to AT command set
242 242  
243 -[[image:1670471530120-960.png||height="647" width="674"]]
205 +[[image:image-20221021110948-8.png]]
244 244  
245 245  
246 246  After configuring the server address and (% style="color:green" %)**reset NMDS200**(%%) (via AT+ATZ ), NMDS200 will start to uplink sensor values to the CoAP server.
... ... @@ -259,7 +259,7 @@
259 259  
260 260  * (% style="color:#037691" %)**AT+CFM=1       ** (%%) ~/~/  If the server does not respond, this command is unnecessary
261 261  
262 -​ [[image:1670471559211-638.png]]
224 +​ [[image:image-20221021111025-10.png]]
263 263  
264 264  
265 265  [[image:image-20221021111033-11.png||height="241" width="576"]]
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285 285  
286 286  * (% style="color:#037691" %)**AT+SUBTOPIC=NSE01_SUB          ** (%%) ~/~/  Set the subscription topic of MQTT
287 287  
288 -​ [[image:1670471584490-640.png]]
250 +​ [[image:image-20221118103445-7.png]]
289 289  
290 290  
291 291  [[image:1670405928926-116.png]]
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304 304  
305 305  * (% style="color:#037691" %)**AT+SERVADDR=120.24.4.116,5600   ** (%%) ~/~/  Set TCP server address and port
306 306  
307 -​ ​​​​​​​[[image:1670471613823-833.png]]
269 +​ [[image:1670406036256-101.png||height="676" width="713"]]
308 308  
309 309  
310 310  [[image:image-20221021111131-15.png]]
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331 331  Each time the device uploads a data package. The user can use the AT+NOUD command to upload the recorded data.Up to 32 sets of recorded data can be uploaded.
332 332  
333 333  
334 -(% border="1" cellspacing="5" style="background-color:#ffffcc; color:green; width:450px" %)
335 -|=(% scope="row" style="width: 60px;" %)**Size(bytes)**|(% style="width:50px" %)**8**|(% style="width:30px" %)**2**|(% style="width:30px" %)**2**|(% style="width:75px" %)**1**|(% style="width:30px" %)**1**|(% style="width:50px" %)**1**|(% style="width:60px" %)**2**|(% style="width:60px" %)**2**
336 -|=(% style="width: 93px;" %)**Value**|(% style="width:67px" %)[[Device ID>>||anchor="H2.4.1A0A0DeviceID"]]|(% style="width:40px" %)[[Ver>>||anchor="H2.4.2A0VersionInfo"]]|(% style="width:45px" %)[[BAT>>||anchor="H2.4.3A0BatteryInfo"]]|(% style="width:75px" %)[[Signal Strength>>||anchor="H2.4.4A0SignalStrength"]]|(% style="width:54px" %)MOD|(% style="width:62px" %)Exit flag|(% style="width:94px" %) [[Distance 1>>||anchor="H2.4.5A0Distance"]] |(% style="width:93px" %) [[Distance 2>>||anchor="H2.4.5A0Distance"]]
296 +(% border="1" cellspacing="5" style="background-color:#ffffcc; color:green; width:510px" %)
297 +|=(% scope="row" style="width: 50px;" %)**Size(bytes)**|(% style="width:50px" %)**8**|(% style="width:20px" %)**2**|(% style="width:20px" %)**2**|(% style="width:65px" %)**1**|(% style="width:25px" %)**1**|(% style="width:50px" %)**1**|(% style="width:90px" %)**2**|(% style="width:100px" %)**2**
298 +|=(% style="width: 93px;" %)**Value**|(% style="width:67px" %)[[Device ID>>||anchor="H2.4.1A0A0DeviceID"]]|(% style="width:40px" %)[[Ver>>||anchor="H2.4.2A0VersionInfo"]]|(% style="width:45px" %)[[BAT>>||anchor="H2.4.3A0BatteryInfo"]]|(% style="width:75px" %)[[Signal Strength>>||anchor="H2.4.4A0SignalStrength"]]|(% style="width:54px" %)MOD|(% style="width:62px" %)Exit flag|(% style="width:94px" %) [[Distance 1>>||anchor="H2.4.5A0A0Distance"]] |(% style="width:93px" %) [[Distance  2>>||anchor="H2.4.5A0A0Distance"]]
337 337  
338 -(% border="1" style="background-color:#ffffcc; color:green; width:429px" %)
339 -|(% style="width:60px" %)**4**|(% style="width:60px" %)**2**|(% style="width:60px" %)**2**|(% style="width:60px" %)**4**|(% style="width:100px" %)(((
300 +(% border="1.5" style="background-color:#ffffcc; color:green; width:450px" %)
301 +|(% style="width:50px" %)**4**|(% style="width:90px" %)**2**|(% style="width:90px" %)**2**|(% style="width:60px" %)**4**|(% style="width:50px" %)(((
340 340  **1-32 group**
341 341  )))
342 -|(% style="width:98px" %)[[Time stamp>>||anchor="H2.4.6A0Timestamp"]]| Distance 1 | Distance  2|(% style="width:67px" %)Time stamp|(% style="width:100px" %)...
304 +|(% style="width:98px" %)[[Time stamp>>||anchor="H2.4.6A0Timestamp"]]| Distance 1 | Distance  2|(% style="width:67px" %)Time stamp|(% style="width:74px" %)...
343 343  
344 344  If we use the MQTT client to subscribe to this MQTT topic, we can see the following information when the NMDS200 uplink data.
345 345  
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372 372  
373 373  
374 374  
337 +
375 375  == 2.4  Payload Explanation and Sensor Interface ==
376 376  
377 377  === 2.4.1  Device ID ===
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411 411  
412 412  NB-IoT Network signal Strength.
413 413  
414 -(% style="color:blue" %)**Ex1: 0x1d = 29**
377 +**(% style="color:blue" %)Ex1: 0x1d = 29**
415 415  
416 -(% style="color:#037691" %)**0** (%%) -113dBm or less
379 +**(% style="color:#037691" %)0** (%%) -113dBm or less
417 417  
418 -(% style="color:#037691" %)**1**  (%%) -111dBm
381 +**(% style="color:#037691" %)1**  (%%) -111dBm
419 419  
420 -(% style="color:#037691" %)**2...30** (%%) -109dBm... -53dBm
383 +**(% style="color:#037691" %)2...30** (%%) -109dBm... -53dBm
421 421  
422 -(% style="color:#037691" %)**31** (%%) -51dBm or greater
385 +**(% style="color:#037691" %)31** (%%)  -51dBm or greater
423 423  
424 -(% style="color:#037691" %)**99** (%%) Not known or not detectable
387 +**(% style="color:#037691" %)99** (%%)   Not known or not detectable
425 425  
426 426  
427 427  === 2.4.5  Distance ===
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488 488  
489 489  
490 490  
454 +
491 491  == 2.7  Distance alarm function ==
492 492  
493 493  
494 494  (% style="color:blue" %)**AT Command: AT+ALARM1=min,max**
495 495  
496 -(% style="color:#037691" %)**Example 1:**
460 +**(% style="color:blue" %)Example 1:**
497 497  
498 498  AT+ ALARM1 =60,200  ~/~/ Alarm when moisture lower than 60.
499 499  
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500 500  AT+ ALARM2 =min,max
501 501  
502 502  
503 -(% style="color:#037691" %)**Example 2:**
467 +**(% style="color:blue" %)Example 2:**
504 504  
505 505  AT+ ALARM2 =200,1500  ~/~/ Alarm when temperature lower than 1500
506 506  
507 507  
472 +
473 +
508 508  == 2.8  Set the number of data to be uploaded and the recording time ==
509 509  
510 510  
... ... @@ -632,13 +632,13 @@
632 632  
633 633  AT+INTMOD            : Set the trigger interrupt mode
634 634  
635 -AT+5VT  : Set extend the time of 5V power  
601 +AT+5VT  : Set extend the time of 5V power  
636 636  
637 -AT+PRO  : Choose agreement
603 +AT+PRO  : Choose agreement
638 638  
639 -AT+RXDL  : Extend the sending and receiving time
605 +AT+RXDL  : Extend the sending and receiving time
640 640  
641 -AT+SERVADDR  : Server Address
607 +AT+SERVADDR  : Server Address
642 642  
643 643  AT+TR      :  Get or Set record time
644 644  
... ... @@ -646,7 +646,7 @@
646 646  
647 647  AT+CDP     :  Read or Clear cached data
648 648  
649 -AT+DEBUG:  Enable or Disable debug mode
615 +AT+DEBUG:  Enable or Disable debug mode
650 650  
651 651  AT+ALARM1:  Get or Set alarm of distance1
652 652  
... ... @@ -716,7 +716,7 @@
716 716  = 7. ​ Order Info =
717 717  
718 718  
719 -Part Number:(% style="color:blue" %)** NMDS200**
685 +Part Number:**(% style="color:blue" %) NMDS200**
720 720  
721 721  
722 722  = 8.  Packing Info =
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726 726  
727 727  * NMDS200 NB-IoT Microwave Radar Distance Sensor x 1
728 728  
729 -
730 -
731 731  = 9.  Support =
732 732  
733 733  
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