Last modified by Mengting Qiu on 2024/04/02 17:03
<
From version < 89.1 >
edited by David Huang
on 2022/12/12 09:03
To version < 83.2 >
edited by Xiaoling
on 2022/12/08 09:28
>
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1 -XWiki.David
1 +XWiki.Xiaoling
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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 ==
... ... @@ -30,33 +30,19 @@
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  
... ... @@ -78,20 +78,18 @@
78 78  * Micro SIM card slot for NB-IoT SIM
79 79  * 8500mAh Battery for long-term use
80 80  
81 -
82 82  == 1.3 Radar probe specification ==
83 83  
84 84  
85 85  * Measuring Method: FMCW
86 -* Frequency: 24.000 ~~ 24.500 GHz
56 +* Frequency: 24.000 24.500 GHz
87 87  * Measurement output power: 6dBm
88 -* Measure range: 0.5 ~~ 20m
58 +* Measure range: 0.5 20m
89 89  * Accuracy: ±0.1m
90 90  * Resolution: 0.01m
91 91  * Horizontal Angel: 78°
92 92  * Vertical Angel: 23°
93 93  
94 -
95 95  == 1.4  Storage Temperature ==
96 96  
97 97  
... ... @@ -111,7 +111,6 @@
111 111  * Sewer
112 112  * Bottom water level monitoring
113 113  
114 -
115 115  == 1.6  Specification ==
116 116  
117 117  
... ... @@ -129,7 +129,6 @@
129 129  * B20 @H-FDD: 800MHz
130 130  * B28 @H-FDD: 700MHz
131 131  
132 -
133 133  == 1.7  Installation ==
134 134  
135 135  
... ... @@ -136,12 +136,10 @@
136 136  Sensor measure direction and angle is as below. When install the sensor, please make sure the sensor direct to object.
137 137  
138 138  
139 -[[image:image-20221207170748-1.png]]
106 +[[image:image-20221207170748-1.png]] [[image:image-20221207170748-2.png||height="366" width="672"]]
140 140  
141 141  
142 - [[image:image-20221207170748-2.png||height="345" width="634"]]
143 143  
144 -
145 145  == 1.8  Pin Definitions and Switch ==
146 146  
147 147  
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157 157  
158 158  The diagram below shows the working flow in the default firmware of NMDS200:
159 159  
160 -[[image:image-20221021110615-5.png||height="996" width="492"]]
125 +[[image:image-20221021110615-5.png]]
161 161  
162 162  
163 163  == 2.2 ​ Configure NMDS200 ==
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171 171  
172 172  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.
173 173  
174 -[[image:image-20221209090938-1.png]]
139 +[[image:image-20221208090742-1.png]]
175 175  
176 176  
177 177  === 2.2.1 Insert NB-IoT SIM card ===
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220 220  (% 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]]
221 221  
222 222  
188 +
223 223  === 2.2.3 Use CoAP protocol to uplink data ===
224 224  
225 225  
... ... @@ -236,7 +236,7 @@
236 236  
237 237  For parameter description, please refer to AT command set
238 238  
239 -[[image:1670471530120-960.png||height="647" width="674"]]
205 +[[image:image-20221021110948-8.png]]
240 240  
241 241  
242 242  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.
... ... @@ -255,7 +255,7 @@
255 255  
256 256  * (% style="color:#037691" %)**AT+CFM=1       ** (%%) ~/~/  If the server does not respond, this command is unnecessary
257 257  
258 -​ [[image:1670471559211-638.png]]
224 +​ [[image:image-20221021111025-10.png]]
259 259  
260 260  
261 261  [[image:image-20221021111033-11.png||height="241" width="576"]]
... ... @@ -281,7 +281,7 @@
281 281  
282 282  * (% style="color:#037691" %)**AT+SUBTOPIC=NSE01_SUB          ** (%%) ~/~/  Set the subscription topic of MQTT
283 283  
284 -​ [[image:1670471584490-640.png]]
250 +​ [[image:image-20221118103445-7.png]]
285 285  
286 286  
287 287  [[image:1670405928926-116.png]]
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300 300  
301 301  * (% style="color:#037691" %)**AT+SERVADDR=120.24.4.116,5600   ** (%%) ~/~/  Set TCP server address and port
302 302  
303 -​ [[image:1670471613823-833.png]]
269 +​ [[image:1670406036256-101.png||height="676" width="713"]]
304 304  
305 305  
306 306  [[image:image-20221021111131-15.png]]
... ... @@ -327,15 +327,15 @@
327 327  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.
328 328  
329 329  
330 -(% border="1" cellspacing="5" style="background-color:#ffffcc; color:green; width:450px" %)
331 -|=(% 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**
332 -|=(% 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 |(% style="width:93px" %) Distance  2
333 333  
334 -(% border="1" style="background-color:#ffffcc; color:green; width:429px" %)
335 -|(% 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" %)(((
336 336  **1-32 group**
337 337  )))
338 -|(% 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="H2.4.7A0Timestamp"]]| Distance 1 | Distance  2|(% style="width:67px" %)Time stamp|(% style="width:74px" %)...
339 339  
340 340  If we use the MQTT client to subscribe to this MQTT topic, we can see the following information when the NMDS200 uplink data.
341 341  
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366 366  
367 367  * (% style="color:#037691" %)**Timestamp: **(%%)0x6390453d =1670399293 (Unix Time)
368 368  
369 -
370 370  == 2.4  Payload Explanation and Sensor Interface ==
371 371  
372 372  === 2.4.1  Device ID ===
... ... @@ -406,17 +406,17 @@
406 406  
407 407  NB-IoT Network signal Strength.
408 408  
409 -(% style="color:blue" %)**Ex1: 0x1d = 29**
374 +**Ex1: 0x1d = 29**
410 410  
411 -(% style="color:#037691" %)**0** (%%) -113dBm or less
376 +**0**  -113dBm or less
412 412  
413 -(% style="color:#037691" %)**1**  (%%) -111dBm
378 +**1**  -111dBm
414 414  
415 -(% style="color:#037691" %)**2...30** (%%) -109dBm... -53dBm
380 +**2...30** -109dBm... -53dBm
416 416  
417 -(% style="color:#037691" %)**31** (%%) -51dBm or greater
382 +**31**   -51dBm or greater
418 418  
419 -(% style="color:#037691" %)**99** (%%) Not known or not detectable
384 +**99**    Not known or not detectable
420 420  
421 421  
422 422  === 2.4.5  Distance ===
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482 482  * For each uplink probe, LED will be on for 500ms.
483 483  
484 484  
450 +
451 +
485 485  == 2.7  Distance alarm function ==
486 486  
487 487  
488 488  (% style="color:blue" %)**AT Command: AT+ALARM1=min,max**
489 489  
490 -(% style="color:#037691" %)**Example 1:**
457 +**(% style="color:blue" %)Example 1:**
491 491  
492 -AT+ ALARM1 =60,200  ~/~/ Alarm when distance1 lower than 60.
459 +AT+ ALARM1 =60,200  ~/~/ Alarm when moisture lower than 60.
493 493  
494 494  AT+ ALARM2 =min,max
495 495  
496 496  
497 -(% style="color:#037691" %)**Example 2:**
464 +**(% style="color:blue" %)Example 2:**
498 498  
499 -AT+ ALARM2 =200,1500  ~/~/ Alarm when distance2 lower than 1500.
466 +AT+ ALARM2 =200,1500  ~/~/ Alarm when temperature lower than 1500
500 500  
501 501  
469 +
470 +
502 502  == 2.8  Set the number of data to be uploaded and the recording time ==
503 503  
504 504  
... ... @@ -626,13 +626,13 @@
626 626  
627 627  AT+INTMOD            : Set the trigger interrupt mode
628 628  
629 -AT+5VT  : Set extend the time of 5V power  
598 +AT+5VT  : Set extend the time of 5V power  
630 630  
631 -AT+PRO  : Choose agreement
600 +AT+PRO  : Choose agreement
632 632  
633 -AT+RXDL  : Extend the sending and receiving time
602 +AT+RXDL  : Extend the sending and receiving time
634 634  
635 -AT+SERVADDR  : Server Address
604 +AT+SERVADDR  : Server Address
636 636  
637 637  AT+TR      :  Get or Set record time
638 638  
... ... @@ -640,7 +640,7 @@
640 640  
641 641  AT+CDP     :  Read or Clear cached data
642 642  
643 -AT+DEBUG:  Enable or Disable debug mode
612 +AT+DEBUG:  Enable or Disable debug mode
644 644  
645 645  AT+ALARM1:  Get or Set alarm of distance1
646 646  
... ... @@ -710,7 +710,7 @@
710 710  = 7. ​ Order Info =
711 711  
712 712  
713 -Part Number:(% style="color:blue" %)** NMDS200**
682 +Part Number:**(% style="color:blue" %) NMDS200**
714 714  
715 715  
716 716  = 8.  Packing Info =
... ... @@ -720,7 +720,6 @@
720 720  
721 721  * NMDS200 NB-IoT Microwave Radar Distance Sensor x 1
722 722  
723 -
724 724  = 9.  Support =
725 725  
726 726  
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