Last modified by Mengting Qiu on 2024/04/02 17:03
<
From version < 83.10 >
edited by Xiaoling
on 2022/12/08 11:32
To version < 90.1 >
edited by Xiaoling
on 2022/12/12 17:16
>
Change comment: Uploaded new attachment "image-20221212171610-1.jpeg", version {1}

Summary

Details

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Content
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1 1  (% style="text-align:center" %)
2 -[[image:LMDS200_10.jpg]]
2 +[[image:LMDS200_10.jpg||height="572" width="572"]]
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4 4  
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8 +(% style="display:none" %) (%%)
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5 5  **Table of Contents：**
6 6  
7 7  {{toc/}}
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9 9  
10 10  
11 11  
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12 12  = 1.  Introduction =
13 13  
14 14  == 1.1 ​ What is NMDS200 NB-IoT Microwave Radar Distance Sensor ==
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64 64  * Micro SIM card slot for NB-IoT SIM
65 65  * 8500mAh Battery for long-term use
66 66  
81 +
67 67  == 1.3 Radar probe specification ==
68 68  
69 69  
70 70  * Measuring Method: FMCW
71 -* Frequency: 24.000 24.500 GHz
86 +* Frequency: 24.000 ~~ 24.500 GHz
72 72  * Measurement output power: 6dBm
73 -* Measure range: 0.5 20m
88 +* Measure range: 0.5 ~~ 20m
74 74  * Accuracy: ±0.1m
75 75  * Resolution: 0.01m
76 76  * Horizontal Angel: 78°
77 77  * Vertical Angel: 23°
78 78  
94 +
79 79  == 1.4  Storage Temperature ==
80 80  
81 81  
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95 95  * Sewer
96 96  * Bottom water level monitoring
97 97  
114 +
98 98  == 1.6  Specification ==
99 99  
100 100  
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112 112  * B20 @H-FDD: 800MHz
113 113  * B28 @H-FDD: 700MHz
114 114  
132 +
115 115  == 1.7  Installation ==
116 116  
117 117  
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118 118  Sensor measure direction and angle is as below. When install the sensor, please make sure the sensor direct to object.
119 119  
120 120  
121 -[[image:image-20221207170748-1.png]] [[image:image-20221207170748-2.png||height="294" width="540"]]
139 +[[image:image-20221207170748-1.png]]
122 122  
123 123  
142 + [[image:image-20221207170748-2.png||height="345" width="634"]]
124 124  
144 +
125 125  == 1.8  Pin Definitions and Switch ==
126 126  
127 127  
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137 137  
138 138  The diagram below shows the working flow in the default firmware of NMDS200:
139 139  
140 -[[image:image-20221021110615-5.png]]
160 +[[image:image-20221021110615-5.png||height="996" width="492"]]
141 141  
142 142  
143 143  == 2.2 ​ Configure NMDS200 ==
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151 151  
152 152  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.
153 153  
154 -[[image:image-20221208090742-1.png]]
174 +[[image:image-20221209090938-1.png]]
155 155  
156 156  
157 157  === 2.2.1 Insert NB-IoT SIM card ===
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200 200  (% 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]]
201 201  
202 202  
203 -
204 204  === 2.2.3 Use CoAP protocol to uplink data ===
205 205  
206 206  
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217 217  
218 218  For parameter description, please refer to AT command set
219 219  
220 -[[image:image-20221021110948-8.png]]
239 +[[image:1670471530120-960.png||height="647" width="674"]]
221 221  
222 222  
223 223  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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236 236  
237 237  * (% style="color:#037691" %)**AT+CFM=1       ** (%%) ~/~/  If the server does not respond, this command is unnecessary
238 238  
239 -​ [[image:image-20221021111025-10.png]]
258 +​ [[image:1670471559211-638.png]]
240 240  
241 241  
242 242  [[image:image-20221021111033-11.png||height="241" width="576"]]
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262 262  
263 263  * (% style="color:#037691" %)**AT+SUBTOPIC=NSE01_SUB          ** (%%) ~/~/  Set the subscription topic of MQTT
264 264  
265 -​ [[image:image-20221118103445-7.png]]
284 +​ [[image:1670471584490-640.png]]
266 266  
267 267  
268 268  [[image:1670405928926-116.png]]
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281 281  
282 282  * (% style="color:#037691" %)**AT+SERVADDR=120.24.4.116,5600   ** (%%) ~/~/  Set TCP server address and port
283 283  
284 -​ [[image:1670406036256-101.png||height="676" width="713"]]
303 +​ [[image:1670471613823-833.png]]
285 285  
286 286  
287 287  [[image:image-20221021111131-15.png]]
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312 312  |=(% 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**
313 313  |=(% 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"]]
314 314  
315 -(% border="1" style="background-color:#ffffcc; color:green; width:350px" %)
334 +(% border="1" style="background-color:#ffffcc; color:green; width:429px" %)
316 316  |(% style="width:60px" %)**4**|(% style="width:60px" %)**2**|(% style="width:60px" %)**2**|(% style="width:60px" %)**4**|(% style="width:100px" %)(((
317 317  **1-32 group**
318 318  )))
319 -|(% style="width:98px" %)[[Time stamp>>||anchor="H2.4.6A0Timestamp"]]| Distance 1 | Distance  2|(% style="width:67px" %)Time stamp|(% style="width:98px" %)...
338 +|(% style="width:98px" %)[[Time stamp>>||anchor="H2.4.6A0Timestamp"]]| Distance 1 | Distance  2|(% style="width:67px" %)Time stamp|(% style="width:100px" %)...
320 320  
321 321  If we use the MQTT client to subscribe to this MQTT topic, we can see the following information when the NMDS200 uplink data.
322 322  
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470 470  
471 471  (% style="color:#037691" %)**Example 1:**
472 472  
473 -AT+ ALARM1 =60,200  ~/~/ Alarm when moisture lower than 60.
492 +AT+ ALARM1 =60,200  ~/~/ Alarm when distance1 lower than 60.
474 474  
475 475  AT+ ALARM2 =min,max
476 476  
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477 477  
478 478  (% style="color:#037691" %)**Example 2:**
479 479  
480 -AT+ ALARM2 =200,1500  ~/~/ Alarm when temperature lower than 1500
499 +AT+ ALARM2 =200,1500  ~/~/ Alarm when distance2 lower than 1500.
481 481  
482 482  
483 483  == 2.8  Set the number of data to be uploaded and the recording time ==
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