Last modified by Mengting Qiu on 2024/04/02 17:03
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From version < 83.4 >
edited by Xiaoling
on 2022/12/08 09:47
To version < 88.2 >
edited by Xiaoling
on 2022/12/09 09:14
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Summary

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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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5 5  **Table of Contents：**
6 6  
16 +{{toc/}}
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9 9  
10 10  
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11 11  = 1.  Introduction =
12 12  
13 13  == 1.1 ​ What is NMDS200 NB-IoT Microwave Radar Distance Sensor ==
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15 15  
16 16  (((
17 17  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.
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18 18  
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19 19  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.
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20 20  
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21 21  NMDS200 can (% style="color:blue" %)**measure two distances**(%%): the closest object and next object behind the closest one.
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22 22  
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23 23  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.
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24 24  
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25 25  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.
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26 26  
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27 27  NMDS200 (% style="color:blue" %)**supports different uplink**(%%) methods including (% style="color:blue" %)**TCP, MQTT, UDP, and CoAP**(%%) for different application requirements.
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28 28  
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29 29  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)
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30 30  
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31 31  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.
32 32  )))
33 33  
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49 49  * Micro SIM card slot for NB-IoT SIM
50 50  * 8500mAh Battery for long-term use
51 51  
81 +
82 +
52 52  == 1.3 Radar probe specification ==
53 53  
54 54  
55 55  * Measuring Method: FMCW
56 -* Frequency: 24.000 24.500 GHz
87 +* Frequency: 24.000 ~~ 24.500 GHz
57 57  * Measurement output power: 6dBm
58 -* Measure range: 0.5 20m
89 +* Measure range: 0.5 ~~ 20m
59 59  * Accuracy: ±0.1m
60 60  * Resolution: 0.01m
61 61  * Horizontal Angel: 78°
62 62  * Vertical Angel: 23°
63 63  
95 +
96 +
64 64  == 1.4  Storage Temperature ==
65 65  
66 66  
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80 80  * Sewer
81 81  * Bottom water level monitoring
82 82  
116 +
117 +
83 83  == 1.6  Specification ==
84 84  
85 85  
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97 97  * B20 @H-FDD: 800MHz
98 98  * B28 @H-FDD: 700MHz
99 99  
135 +
136 +
100 100  == 1.7  Installation ==
101 101  
102 102  
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103 103  Sensor measure direction and angle is as below. When install the sensor, please make sure the sensor direct to object.
104 104  
105 105  
106 -[[image:image-20221207170748-1.png]] [[image:image-20221207170748-2.png||height="366" width="672"]]
143 +[[image:image-20221207170748-1.png]]
107 107  
108 108  
146 + [[image:image-20221207170748-2.png||height="345" width="634"]]
109 109  
148 +
110 110  == 1.8  Pin Definitions and Switch ==
111 111  
112 112  
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122 122  
123 123  The diagram below shows the working flow in the default firmware of NMDS200:
124 124  
125 -[[image:image-20221021110615-5.png]]
164 +[[image:image-20221021110615-5.png||height="996" width="492"]]
126 126  
127 127  
128 128  == 2.2 ​ Configure NMDS200 ==
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136 136  
137 137  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.
138 138  
139 -[[image:image-20221208090742-1.png]]
178 +[[image:image-20221209090938-1.png]]
140 140  
141 141  
142 142  === 2.2.1 Insert NB-IoT SIM card ===
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185 185  (% 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]]
186 186  
187 187  
188 -
189 189  === 2.2.3 Use CoAP protocol to uplink data ===
190 190  
191 191  
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202 202  
203 203  For parameter description, please refer to AT command set
204 204  
205 -[[image:image-20221021110948-8.png]]
243 +[[image:1670471530120-960.png||height="647" width="674"]]
206 206  
207 207  
208 208  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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221 221  
222 222  * (% style="color:#037691" %)**AT+CFM=1       ** (%%) ~/~/  If the server does not respond, this command is unnecessary
223 223  
224 -​ [[image:image-20221021111025-10.png]]
262 +​ [[image:1670471559211-638.png]]
225 225  
226 226  
227 227  [[image:image-20221021111033-11.png||height="241" width="576"]]
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247 247  
248 248  * (% style="color:#037691" %)**AT+SUBTOPIC=NSE01_SUB          ** (%%) ~/~/  Set the subscription topic of MQTT
249 249  
250 -​ [[image:image-20221118103445-7.png]]
288 +​ [[image:1670471584490-640.png]]
251 251  
252 252  
253 253  [[image:1670405928926-116.png]]
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266 266  
267 267  * (% style="color:#037691" %)**AT+SERVADDR=120.24.4.116,5600   ** (%%) ~/~/  Set TCP server address and port
268 268  
269 -​ [[image:1670406036256-101.png||height="676" width="713"]]
307 +​ ​​​​​​​[[image:1670471613823-833.png]]
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271 271  
272 272  [[image:image-20221021111131-15.png]]
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293 293  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.
294 294  
295 295  
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"]]
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"]]
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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" %)(((
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" %)(((
302 302  **1-32 group**
303 303  )))
304 -|(% style="width:98px" %)[[Time stamp>>||anchor="H2.4.6A0Timestamp"]]| Distance 1 | Distance  2|(% style="width:67px" %)Time stamp|(% style="width:74px" %)...
342 +|(% style="width:98px" %)[[Time stamp>>||anchor="H2.4.6A0Timestamp"]]| Distance 1 | Distance  2|(% style="width:67px" %)Time stamp|(% style="width:100px" %)...
305 305  
306 306  If we use the MQTT client to subscribe to this MQTT topic, we can see the following information when the NMDS200 uplink data.
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467 467  AT+ ALARM2 =200,1500  ~/~/ Alarm when temperature lower than 1500
468 468  
469 469  
470 -
471 -
472 472  == 2.8  Set the number of data to be uploaded and the recording time ==
473 473  
474 474  
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596 596  
597 597  AT+INTMOD            : Set the trigger interrupt mode
598 598  
599 -AT+5VT  : Set extend the time of 5V power  
635 +AT+5VT  : Set extend the time of 5V power  
600 600  
601 -AT+PRO  : Choose agreement
637 +AT+PRO  : Choose agreement
602 602  
603 -AT+RXDL  : Extend the sending and receiving time
639 +AT+RXDL  : Extend the sending and receiving time
604 604  
605 -AT+SERVADDR  : Server Address
641 +AT+SERVADDR  : Server Address
606 606  
607 607  AT+TR      :  Get or Set record time
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610 610  
611 611  AT+CDP     :  Read or Clear cached data
612 612  
613 -AT+DEBUG:  Enable or Disable debug mode
649 +AT+DEBUG:  Enable or Disable debug mode
614 614  
615 615  AT+ALARM1:  Get or Set alarm of distance1
616 616  
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690 690  
691 691  * NMDS200 NB-IoT Microwave Radar Distance Sensor x 1
692 692  
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693 693  = 9.  Support =
694 694  
695 695  
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