Last modified by Mengting Qiu on 2024/04/02 17:03
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From version < 85.1 >
edited by Xiaoling
on 2022/12/08 11:52
To version < 83.6 >
edited by Xiaoling
on 2022/12/08 11:16
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16 16  
17 17  (((
18 18  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.
19 -)))
20 20  
21 -(((
22 22  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.
23 -)))
24 24  
25 -(((
26 26  NMDS200 can (% style="color:blue" %)**measure two distances**(%%): the closest object and next object behind the closest one.
27 -)))
28 28  
29 -(((
30 30  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.
31 -)))
32 32  
33 -(((
34 34  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.
35 -)))
36 36  
37 -(((
38 38  NMDS200 (% style="color:blue" %)**supports different uplink**(%%) methods including (% style="color:blue" %)**TCP, MQTT, UDP, and CoAP**(%%) for different application requirements.
39 -)))
40 40  
41 -(((
42 42  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)
43 -)))
44 44  
45 -(((
46 46  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.
47 47  )))
48 48  
... ... @@ -64,22 +64,18 @@
64 64  * Micro SIM card slot for NB-IoT SIM
65 65  * 8500mAh Battery for long-term use
66 66  
67 -
68 -
69 69  == 1.3 Radar probe specification ==
70 70  
71 71  
72 72  * Measuring Method: FMCW
73 -* Frequency: 24.000 ~~ 24.500 GHz
57 +* Frequency: 24.000 24.500 GHz
74 74  * Measurement output power: 6dBm
75 -* Measure range: 0.5 ~~ 20m
59 +* Measure range: 0.5 20m
76 76  * Accuracy: ±0.1m
77 77  * Resolution: 0.01m
78 78  * Horizontal Angel: 78°
79 79  * Vertical Angel: 23°
80 80  
81 -
82 -
83 83  == 1.4  Storage Temperature ==
84 84  
85 85  
... ... @@ -99,8 +99,6 @@
99 99  * Sewer
100 100  * Bottom water level monitoring
101 101  
102 -
103 -
104 104  == 1.6  Specification ==
105 105  
106 106  
... ... @@ -118,8 +118,6 @@
118 118  * B20 @H-FDD: 800MHz
119 119  * B28 @H-FDD: 700MHz
120 120  
121 -
122 -
123 123  == 1.7  Installation ==
124 124  
125 125  
... ... @@ -126,13 +126,10 @@
126 126  Sensor measure direction and angle is as below. When install the sensor, please make sure the sensor direct to object.
127 127  
128 128  
129 -[[image:image-20221207170748-1.png]]
107 +[[image:image-20221207170748-1.png]] [[image:image-20221207170748-2.png||height="366" width="672"]]
130 130  
131 131  
132 - [[image:image-20221207170748-2.png||height="345" width="634"]]
133 133  
134 -
135 -
136 136  == 1.8  Pin Definitions and Switch ==
137 137  
138 138  
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148 148  
149 149  The diagram below shows the working flow in the default firmware of NMDS200:
150 150  
151 -[[image:image-20221021110615-5.png||height="996" width="492"]]
126 +[[image:image-20221021110615-5.png]]
152 152  
153 153  
154 154  == 2.2 ​ Configure NMDS200 ==
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211 211  (% 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]]
212 212  
213 213  
189 +
214 214  === 2.2.3 Use CoAP protocol to uplink data ===
215 215  
216 216  
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318 318  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.
319 319  
320 320  
321 -(% border="1" cellspacing="5" style="background-color:#ffffcc; color:green; width:450px" %)
322 -|=(% 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**
323 -|=(% 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"]]
297 +(% border="1" cellspacing="5" style="background-color:#ffffcc; color:green; width:510px" %)
298 +|=(% 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**
299 +|=(% 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"]]
324 324  
325 -(% border="1" style="background-color:#ffffcc; color:green; width:429px" %)
326 -|(% style="width:60px" %)**4**|(% style="width:60px" %)**2**|(% style="width:60px" %)**2**|(% style="width:60px" %)**4**|(% style="width:100px" %)(((
301 +(% border="1.5" style="background-color:#ffffcc; color:green; width:450px" %)
302 +|(% style="width:50px" %)**4**|(% style="width:90px" %)**2**|(% style="width:90px" %)**2**|(% style="width:60px" %)**4**|(% style="width:50px" %)(((
327 327  **1-32 group**
328 328  )))
329 -|(% style="width:98px" %)[[Time stamp>>||anchor="H2.4.6A0Timestamp"]]| Distance 1 | Distance  2|(% style="width:67px" %)Time stamp|(% style="width:100px" %)...
305 +|(% style="width:98px" %)[[Time stamp>>||anchor="H2.4.6A0Timestamp"]]| Distance 1 | Distance  2|(% style="width:67px" %)Time stamp|(% style="width:74px" %)...
330 330  
331 331  If we use the MQTT client to subscribe to this MQTT topic, we can see the following information when the NMDS200 uplink data.
332 332  
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358 358  * (% style="color:#037691" %)**Timestamp: **(%%)0x6390453d =1670399293 (Unix Time)
359 359  
360 360  
361 -
362 362  == 2.4  Payload Explanation and Sensor Interface ==
363 363  
364 364  === 2.4.1  Device ID ===
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619 619  
620 620  AT+INTMOD            : Set the trigger interrupt mode
621 621  
622 -AT+5VT  : Set extend the time of 5V power  
597 +AT+5VT  : Set extend the time of 5V power  
623 623  
624 -AT+PRO  : Choose agreement
599 +AT+PRO  : Choose agreement
625 625  
626 -AT+RXDL  : Extend the sending and receiving time
601 +AT+RXDL  : Extend the sending and receiving time
627 627  
628 -AT+SERVADDR  : Server Address
603 +AT+SERVADDR  : Server Address
629 629  
630 630  AT+TR      :  Get or Set record time
631 631  
... ... @@ -633,7 +633,7 @@
633 633  
634 634  AT+CDP     :  Read or Clear cached data
635 635  
636 -AT+DEBUG:  Enable or Disable debug mode
611 +AT+DEBUG:  Enable or Disable debug mode
637 637  
638 638  AT+ALARM1:  Get or Set alarm of distance1
639 639  
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713 713  
714 714  * NMDS200 NB-IoT Microwave Radar Distance Sensor x 1
715 715  
716 -
717 -
718 718  = 9.  Support =
719 719  
720 720  
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