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 < 83.9 >
edited by Xiaoling
on 2022/12/08 11:31
>
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Summary

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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 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 82  == 1.3 Radar probe specification ==
83 83  
84 84  
85 85  * Measuring Method: FMCW
86 -* Frequency: 24.000 ~~ 24.500 GHz
71 +* Frequency: 24.000 24.500 GHz
87 87  * Measurement output power: 6dBm
88 -* Measure range: 0.5 ~~ 20m
73 +* 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  
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111 111  * Sewer
112 112  * Bottom water level monitoring
113 113  
114 -
115 115  == 1.6  Specification ==
116 116  
117 117  
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129 129  * B20 @H-FDD: 800MHz
130 130  * B28 @H-FDD: 700MHz
131 131  
132 -
133 133  == 1.7  Installation ==
134 134  
135 135  
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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]]
121 +[[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"]]
140 +[[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]]
154 +[[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  
203 +
223 223  === 2.2.3 Use CoAP protocol to uplink data ===
224 224  
225 225  
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236 236  
237 237  For parameter description, please refer to AT command set
238 238  
239 -[[image:1670471530120-960.png||height="647" width="674"]]
220 +[[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.
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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]]
239 +​ [[image:image-20221021111025-10.png]]
259 259  
260 260  
261 261  [[image:image-20221021111033-11.png||height="241" width="576"]]
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281 281  
282 282  * (% style="color:#037691" %)**AT+SUBTOPIC=NSE01_SUB          ** (%%) ~/~/  Set the subscription topic of MQTT
283 283  
284 -​ [[image:1670471584490-640.png]]
265 +​ [[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]]
284 +​ [[image:1670406036256-101.png||height="676" width="713"]]
304 304  
305 305  
306 306  [[image:image-20221021111131-15.png]]
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331 331  |=(% 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**
332 332  |=(% 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"]]
333 333  
334 -(% border="1" style="background-color:#ffffcc; color:green; width:429px" %)
315 +(% border="1" style="background-color:#ffffcc; color:green; width:350px" %)
335 335  |(% style="width:60px" %)**4**|(% style="width:60px" %)**2**|(% style="width:60px" %)**2**|(% style="width:60px" %)**4**|(% style="width:100px" %)(((
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" %)...
319 +|(% style="width:98px" %)[[Time stamp>>||anchor="H2.4.6A0Timestamp"]]| Distance 1 | Distance  2|(% style="width:67px" %)Time stamp|(% style="width:98px" %)...
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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489 489  
490 490  (% style="color:#037691" %)**Example 1:**
491 491  
492 -AT+ ALARM1 =60,200  ~/~/ Alarm when distance1 lower than 60.
473 +AT+ ALARM1 =60,200  ~/~/ Alarm when moisture lower than 60.
493 493  
494 494  AT+ ALARM2 =min,max
495 495  
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496 496  
497 497  (% style="color:#037691" %)**Example 2:**
498 498  
499 -AT+ ALARM2 =200,1500  ~/~/ Alarm when distance2 lower than 1500.
480 +AT+ ALARM2 =200,1500  ~/~/ Alarm when temperature lower than 1500
500 500  
501 501  
502 502  == 2.8  Set the number of data to be uploaded and the recording time ==
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