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 < 83.11 >
edited by Xiaoling
on 2022/12/08 11:33
>
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Summary

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Content
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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 16  {{toc/}}
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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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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
71 +* Frequency: 24.000 24.500 GHz
88 88  * Measurement output power: 6dBm
89 -* Measure range: 0.5 ~~ 20m
73 +* 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  
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113 113  * Sewer
114 114  * Bottom water level monitoring
115 115  
116 -
117 -
118 118  == 1.6  Specification ==
119 119  
120 120  
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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  
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146 146   [[image:image-20221207170748-2.png||height="345" width="634"]]
147 147  
148 148  
127 +
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"]]
143 +[[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]]
157 +[[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  
206 +
227 227  === 2.2.3 Use CoAP protocol to uplink data ===
228 228  
229 229  
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240 240  
241 241  For parameter description, please refer to AT command set
242 242  
243 -[[image:1670471530120-960.png||height="647" width="674"]]
223 +[[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.
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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]]
242 +​ [[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]]
268 +​ [[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]]
287 +​ [[image:1670406036256-101.png||height="676" width="713"]]
308 308  
309 309  
310 310  [[image:image-20221021111131-15.png]]
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335 335  |=(% 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**
336 336  |=(% 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"]]
337 337  
338 -(% border="1" style="background-color:#ffffcc; color:green; width:429px" %)
318 +(% border="1" style="background-color:#ffffcc; color:green; width:350px" %)
339 339  |(% style="width:60px" %)**4**|(% style="width:60px" %)**2**|(% style="width:60px" %)**2**|(% style="width:60px" %)**4**|(% style="width:100px" %)(((
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" %)...
322 +|(% style="width:98px" %)[[Time stamp>>||anchor="H2.4.6A0Timestamp"]]| Distance 1 | Distance  2|(% style="width:67px" %)Time stamp|(% style="width:98px" %)...
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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371 371  * (% style="color:#037691" %)**Timestamp: **(%%)0x6390453d =1670399293 (Unix Time)
372 372  
373 373  
374 -
375 375  == 2.4  Payload Explanation and Sensor Interface ==
376 376  
377 377  === 2.4.1  Device ID ===
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487 487  * For each uplink probe, LED will be on for 500ms.
488 488  
489 489  
490 -
491 491  == 2.7  Distance alarm function ==
492 492  
493 493  
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727 727  * NMDS200 NB-IoT Microwave Radar Distance Sensor x 1
728 728  
729 729  
730 -
731 731  = 9.  Support =
732 732  
733 733  
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