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Version 86.6 by Xiaoling on 2023/09/12 10:55
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1 (% style="text-align:center" %)
2 [[image:image-20230912085600-1.png||height="519" width="731"]]
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11
12 **Table of Contents:**
13
14 {{toc/}}
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20
21 = 1. Introduction =
22
23 == 1.1 What is DDS45-NB NB-IoT Distance Detection Sensor ==
24
25
26 The Dragino DDS45-NB is a (% style="color:blue" %)** NB-IoT Distance Detection Sensor**(%%) for Internet of Things solution. It is used to measure the distance between the sensor and a flat object. The distance detection sensor is a module that uses (% style="color:blue" %)** ultrasonic sensing technology**(%%) for distance measurement, and (% style="color:blue" %)** temperature compensation**(%%) is performed internally to improve the reliability of data. The DDS45-NB can be applied to scenarios such as horizontal distance measurement, liquid level measurement, parking management system, object proximity and presence detection, intelligent trash can management system, robot obstacle avoidance, automatic control, sewer, bottom water level monitoring, etc.
27
28 It detects the distance (% style="color:blue" %)** between the measured object and the sensor**(%%), and and send IoT platform via NB-IoT network.
29
30 DDS45-NB supports different uplink methods including (% style="color:blue" %)**MQTT, MQTTs, UDP & TCP**(%%) for different application requirement, and support uplinks to various IoT Servers.
31
32 DDS45-NB (% style="color:blue" %)**supports BLE configure **(%%)and(% style="color:blue" %)** OTA update**(%%) which make user easy to use.
33
34 DDS45-NB is powered by (% style="color:blue" %)**8500mAh Li-SOCI2 battery**(%%), it is designed for long-term use up to severa years.
35
36 DDS45-NB has optional built-in SIM card and default IoT server connection version. Which makes it works with simple configuration.
37
38 [[image:image-20230912102813-2.png||height="320" width="923"]]
39
40
41 == 1.2 ​Features ==
42
43
44 * NB-IoT Bands: B1/B2/B3/B4/B5/B8/B12/B13/B17/B18/B19/B20/B25/B28/B66/B70/B85 @H-FDD
45 * Ultra-low power consumption
46 * Distance Detection by Ultrasonic technology
47 * Flat object range 30mm - 4500mm
48 * Accuracy: ±(1cm+S*0.3%) (S: Distance)
49 * Measure Angle: 60°
50 * Multiply Sampling and one uplink
51 * Support Bluetooth v5.1 remote configure and update firmware
52 * Uplink on periodically
53 * Downlink to change configure
54 * IP66 Waterproof Enclosure
55 * 8500mAh Battery for long term use
56 * Nano SIM card slot for NB-IoT SIM
57
58 == 1.3 Specification ==
59
60
61 (% style="color:blue" %)**Common DC Characteristics:**
62
63 * Supply Voltage: 2.5v ~~ 3.6v
64 * Operating Temperature: -40 ~~ 85°C
65
66 (% style="color:blue" %)**NB-IoT Spec:**
67
68 (% style="color:#037691" %)**NB-IoT Module: BC660K-GL**
69
70 (% style="color:#037691" %)**Support Bands:**
71
72 * B1 @H-FDD: 2100MHz
73 * B2 @H-FDD: 1900MHz
74 * B3 @H-FDD: 1800MHz
75 * B4 @H-FDD: 2100MHz
76 * B5 @H-FDD: 860MHz
77 * B8 @H-FDD: 900MHz
78 * B12 @H-FDD: 720MHz
79 * B13 @H-FDD: 740MHz
80 * B17 @H-FDD: 730MHz
81 * B18 @H-FDD: 870MHz
82 * B19 @H-FDD: 870MHz
83 * B20 @H-FDD: 790MHz
84 * B25 @H-FDD: 1900MHz
85 * B28 @H-FDD: 750MHz
86 * B66 @H-FDD: 2000MHz
87 * B70 @H-FDD: 2000MHz
88 * B85 @H-FDD: 700MHz
89
90 (% style="color:blue" %)**Battery:**
91
92 * Li/SOCI2 un-chargeable battery
93 * Capacity: 8500mAh
94 * Self Discharge: <1% / Year @ 25°C
95 * Max continuously current: 130mA
96 * Max boost current: 2A, 1 second
97
98 (% style="color:blue" %)**Power Consumption**
99
100 * STOP Mode: 10uA @ 3.3v
101 * Max transmit power: 350mA@3.3v
102
103 == 1.4 Rated environmental conditions ==
104
105
106 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:500px" %)
107 |(% style="background-color:#4f81bd; color:white; width:163px" %)**Item**|(% style="background-color:#4f81bd; color:white; width:90px" %)**Minimum value**|(% style="background-color:#4f81bd; color:white; width:70px" %)**Typical value**|(% style="background-color:#4f81bd; color:white; width:87px" %)**Maximum value**|(% style="background-color:#4f81bd; color:white; width:40px" %)**Unit**|(% style="background-color:#4f81bd; color:white; width:50px" %)**Remarks**
108 |(% style="width:174px" %)Storage temperature|(% style="width:86px" %)-25|(% style="width:66px" %)25|(% style="width:90px" %)80|(% style="width:48px" %)℃|(% style="width:203px" %)
109 |(% style="width:174px" %)Storage humidity|(% style="width:86px" %) |(% style="width:66px" %)65%|(% style="width:90px" %)90%|(% style="width:48px" %)RH|(% style="width:203px" %)(1)
110 |(% style="width:174px" %)Operating temperature|(% style="width:86px" %)-15|(% style="width:66px" %)25|(% style="width:90px" %)60|(% style="width:48px" %)℃|(% style="width:203px" %)
111 |(% style="width:174px" %)Working humidity|(% style="width:86px" %)(((
112
113
114
115 )))|(% style="width:66px" %)65%|(% style="width:90px" %)80%|(% style="width:48px" %)RH|(% style="width:203px" %)(1)
116
117 (((
118 (% style="color:red" %)**Remarks: (1) a. When the ambient temperature is 0-39 ℃, the maximum humidity is 90% (non-condensing);       **
119
120 (% style="color:red" %)** b. When the ambient temperature is 40-50 ℃, the highest humidity is the highest humidity in the natural world at the current temperature (no condensation)**
121
122
123 )))
124
125 == 1.5 Effective measurement range Reference beam pattern ==
126
127
128 (% style="color:blue" %)**1. The tested object is a white cylindrical tube made of PVC, with a height of 100cm and a diameter of 7.5cm.**
129
130 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS75%20-%20LoRaWAN%20Distance%20Detection%20Sensor%20User%20Manual/WebHome/1654852253176-749.png?rev=1.1||alt="1654852253176-749.png"]]
131
132
133 (% style="color:blue" %)**2. The object to be tested is a "corrugated cardboard box" perpendicular to the central axis of 0 °, and the length * width is 60cm * 50cm.**
134
135 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS75%20-%20LoRaWAN%20Distance%20Detection%20Sensor%20User%20Manual/WebHome/1654852175653-550.png?rev=1.1||alt="1654852175653-550.png"]]
136
137
138 == 1.6 Applications ==
139
140
141 * Horizontal distance measurement
142 * Liquid level measurement
143 * Parking management system
144 * Object proximity and presence detection
145 * Intelligent trash can management system
146 * Robot obstacle avoidance
147 * Automatic control
148 * Sewer
149 * Bottom water level monitoring
150
151
152 == 1.7 Sleep mode and working mode ==
153
154
155 (% style="color:blue" %)**Deep Sleep Mode: **(%%)Sensor doesn't have any LoRaWAN activate. This mode is used for storage and shipping to save battery life.
156
157 (% style="color:blue" %)**Working Mode:** (%%)In this mode, Sensor will work as LoRaWAN Sensor to Join LoRaWAN network and send out sensor data to server. Between each sampling/tx/rx periodically, sensor will be in IDLE mode), in IDLE mode, sensor has the same power consumption as Deep Sleep mode.
158
159
160 == 1.8 Button & LEDs ==
161
162
163 [[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675071855856-879.png]]
164
165
166 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
167 |=(% style="width: 167px;background-color:#4F81BD;color:white" %)**Behavior on ACT**|=(% style="width: 117px;background-color:#4F81BD;color:white" %)**Function**|=(% style="width:225px;background-color:#4F81BD;color:white" %)**Action**
168 |(% style="width:167px" %)Pressing ACT between 1s < time < 3s|(% style="width:117px" %)Send an uplink|(% style="width:225px" %)(((
169 If sensor has already attached to NB-IoT network, sensor will send an uplink packet, (% style="color:blue" %)**blue led** (%%)will blink once.
170 Meanwhile, BLE module will be active and user can connect via BLE to configure device.
171 )))
172 |(% style="width:167px" %)Pressing ACT for more than 3s|(% style="width:117px" %)Active Device|(% style="width:225px" %)(((
173 (% style="color:green" %)**Green led**(%%) will fast blink 5 times, device will enter (% style="color:#037691" %)**OTA mode**(%%) for 3 seconds. And then start to attach NB-IoT network.
174 (% style="color:green" %)**Green led**(%%) will solidly turn on for 5 seconds after joined in network.
175 Once sensor is active, BLE module will be active and user can connect via BLE to configure device, no matter if device attach NB-IoT network or not.
176 )))
177 |(% style="width:167px" %)Fast press ACT 5 times.|(% style="width:117px" %)Deactivate Device|(% style="width:225px" %)(% style="color:red" %)**Red led**(%%) will solid on for 5 seconds. Means device is in Deep Sleep Mode.
178
179 == 1.9 BLE connection ==
180
181
182 DDS20-NB support BLE remote configure and firmware update.
183
184
185 BLE can be used to configure the parameter of sensor or see the console output from sensor. BLE will be only activate on below case:
186
187 * Press button to send an uplink
188 * Press button to active device.
189 * Device Power on or reset.
190
191 If there is no activity connection on BLE in 60 seconds, sensor will shut down BLE module to enter low power mode.
192
193
194 == 1.10 Pin Definitions & Switch ==
195
196
197 [[image:image-20230819104805-5.png]]
198
199
200 === 1.10.1 Jumper JP2 ===
201
202
203 Power on Device when put this jumper.
204
205
206 === 1.10.2 BOOT MODE / SW1 ===
207
208
209 **1)** (% style="color:blue" %)**ISP**(%%): upgrade mode, device won't have any signal in this mode. but ready for upgrade firmware. LED won't work. Firmware won't run.
210
211 **2)** (% style="color:blue" %)**Flash**(%%): work mode, device starts to work and send out console output for further debug
212
213
214 === 1.10.3 Reset Button ===
215
216
217 Press to reboot the device.
218
219 (% style="display:none" %)
220
221
222 == 1.11 Mechanical ==
223
224 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual/WebHome/1675143884058-338.png?rev=1.1||alt="1675143884058-338.png"]]
225
226 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual/WebHome/1675143899218-599.png?rev=1.1||alt="1675143899218-599.png"]]
227
228 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual/WebHome/1675143909447-639.png?rev=1.1||alt="1675143909447-639.png"]]
229
230
231 (% style="color:blue" %)**Probe Mechanical:**
232
233 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS45%20-%20LoRaWAN%20Distance%20Detection%20Sensor%20User%20Manual/WebHome/1654915562090-396.png?rev=1.1||alt="1654915562090-396.png"]]
234
235
236
237 = 2. Use DDS45-NB to communicate with IoT Server =
238
239 == 2.1 Send data to IoT server via NB-IoT network ==
240
241
242 The DDS45-NB is equipped with a NB-IoT module, the pre-loaded firmware in DDS45-NB will get environment data from sensors and send the value to local NB-IoT network via the NB-IoT module.  The NB-IoT network will forward this value to IoT server via the protocol defined by DDS45-NB.
243
244
245 Below shows the network structure:
246
247 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/DDS45-NB_NB-IoT_Distance_Detection_Sensor_User_Manual/WebHome/image-20230912102813-2.png?width=923&height=320&rev=1.1||alt="image-20230912102813-2.png"]]
248
249
250 There are two version: (% style="color:blue" %)**-GE**(%%) and (% style="color:blue" %)**-1D**(%%) version of DDS45-NB.
251
252
253 (% style="color:blue" %)**GE Version**(%%): This version doesn't include SIM card or point to any IoT server. User needs to use AT Commands to configure below two steps to set DDS20-NB send data to IoT server.
254
255 * Install NB-IoT SIM card and configure APN. See instruction of [[Attach Network>>url:http://wiki.dragino.com/xwiki/bin/view/Main/General%20Configure%20to%20Connect%20to%20IoT%20server%20for%20-NB%20%26%20-NS%20NB-IoT%20models/#H2.AttachNetwork]].
256
257 * Set up sensor to point to IoT Server. See instruction of [[Configure to Connect Different Servers>>url:http://wiki.dragino.com/xwiki/bin/view/Main/General%20Configure%20to%20Connect%20to%20IoT%20server%20for%20-NB%20%26%20-NS%20NB-IoT%20models/#H3.Configuretoconnecttodifferentservers]]. 
258
259 Below shows result of different server as a glance.
260
261 (% border="1" cellspacing="4" style="width:515px" %)
262 |(% style="background-color:#4f81bd; color:white; width:100px" %)**Servers**|(% style="background-color:#4f81bd; color:white; width:300px" %)**Dash Board**|(% style="background-color:#4f81bd; color:white; width:115px" %)**Comments**
263 |(% style="width:127px" %)[[Node-Red>>url:http://wiki.dragino.com/xwiki/bin/view/Main/General%20Configure%20to%20Connect%20to%20IoT%20server%20for%20-NB%20%26%20-NS%20NB-IoT%20models/#H3.5A0Node-RedA028viaA0MQTT29]]|(% style="width:385px" %)(((
264 (% style="text-align:center" %)
265 [[image:image-20230819113244-8.png||height="183" width="367"]]
266 )))|(% style="width:170px" %)
267 |(% style="width:127px" %)[[DataCake>>url:http://wiki.dragino.com/xwiki/bin/view/Main/General%20Configure%20to%20Connect%20to%20IoT%20server%20for%20-NB%20%26%20-NS%20NB-IoT%20models/#H3.4Datacake]]|(% style="width:385px" %)(((
268 (% style="text-align:center" %)
269 [[image:image-20230819113244-9.png||height="119" width="367"]]
270 )))|(% style="width:170px" %)
271 |(% style="width:127px" %)[[Tago.IO>>url:http://wiki.dragino.com/xwiki/bin/view/Main/General%20Configure%20to%20Connect%20to%20IoT%20server%20for%20-NB%20%26%20-NS%20NB-IoT%20models/#H3.7A0Tago.ioA028viaA0MQTT29]]|(% style="width:385px" %) |(% style="width:170px" %)
272 |(% style="width:127px" %)[[General UDP>>url:http://wiki.dragino.com/xwiki/bin/view/Main/General%20Configure%20to%20Connect%20to%20IoT%20server%20for%20-NB%20%26%20-NS%20NB-IoT%20models/#H3.1GeneralA0UDPA0Connection]]|(% style="width:385px" %)Raw Payload. Need Developer to design Dash Board|(% style="width:170px" %)
273 |(% style="width:127px" %)[[General MQTT>>url:http://wiki.dragino.com/xwiki/bin/view/Main/General%20Configure%20to%20Connect%20to%20IoT%20server%20for%20-NB%20%26%20-NS%20NB-IoT%20models/#H3.2GeneralA0MQTTA0Connection]]|(% style="width:385px" %)Raw Payload. Need Developer to design Dash Board|(% style="width:170px" %)
274 |(% style="width:127px" %)[[ThingSpeak>>url:http://wiki.dragino.com/xwiki/bin/view/Main/General%20Configure%20to%20Connect%20to%20IoT%20server%20for%20-NB%20%26%20-NS%20NB-IoT%20models/#H3.3A0ThingSpeakA028viaA0MQTT29]]|(% style="width:385px" %)(((
275 (% style="text-align:center" %)
276 [[image:image-20230819113244-10.png||height="104" width="367"]]
277 )))|(% style="width:170px" %)
278 |(% style="width:127px" %)[[ThingsBoard>>url:http://wiki.dragino.com/xwiki/bin/view/Main/General%20Configure%20to%20Connect%20to%20IoT%20server%20for%20-NB%20%26%20-NS%20NB-IoT%20models/#H3.6A0ThingsBoard.CloudA028viaA0MQTT29]]|(% style="width:385px" %)(((
279 (% style="text-align:center" %)
280 [[image:image-20230819113244-11.png||height="141" width="367"]]
281 )))|(% style="width:170px" %)
282
283 (% style="color:blue" %)**1D Version**(%%): This version has 1NCE SIM card pre-installed and configure to send value to DataCake. User Just need to select the sensor type in DataCake and Activate DDS20-NB and user will be able to see data in DataCake. See here for [[DataCake Config Instruction>>url:http://wiki.dragino.com/xwiki/bin/view/Main/General%20Configure%20to%20Connect%20to%20IoT%20server%20for%20-NB%20%26%20-NS%20NB-IoT%20models/#H3.4Datacake]].
284
285
286 == 2.2 ​Payload Types ==
287
288
289 To meet different server requirement, DDS20-NB supports different payload type.
290
291 **Includes:**
292
293 * [[General JSON format payload>>||anchor="H2.2.1GeneralJsonFormat28Type3D529"]]. (Type=5)
294
295 * [[HEX format Payload>>||anchor="H2.2.2HEXformatPayload28Type3D029"]]. (Type=0)
296
297 * [[ThingSpeak Format>>||anchor="H2.2.4ThingSpeakPayload28Type3D129"]]. (Type=1)
298
299 * [[ThingsBoard Format>>||anchor="H2.2.3ThingsBoardPayload28Type3D329"]]. (Type=3)
300
301 User can specify the payload type when choose the connection protocol. Example:
302
303 (% style="color:#037691" %)**AT+PRO=2,0**  (%%) ~/~/ Use UDP Connection & hex Payload
304
305 (% style="color:#037691" %)**AT+PRO=2,5**   (%%) ~/~/ Use UDP Connection & Json Payload
306
307 (% style="color:#037691" %)**AT+PRO=3,5 ** (%%) ~/~/ Use MQTT Connection & Json Payload
308
309
310 === 2.2.1 General Json Format(Type~=5) ===
311
312
313 This is the General Json Format. As below:
314
315 (% style="color:#4472c4" %)**{"IMEI":866207053462762,"temperature":29.2,"humidity":54.2,"battery":3.27,"signal":24,"Model":DDS20-NB, "1":{28.2,48.3,2023/08/10 08:00:37},"2":{28.1,49.1,2023/08/10 07:57:37},"3":{28.1,48.5,2023/08/10 07:54:37},"4":{28.2,48.6,2023/08/10 07:51:37},"5":{28.1,48.9,2023/08/10 07:48:37},"6":{28.2,48.8,2023/08/10 07:45:37},"7":{28.2,48.8,2023/08/10 07:42:37},"8":{28.0,48.8,2023/08/10 07:39:37}}**
316
317
318 (% style="color:red" %)**Notice, from above payload:**
319
320 * Temperature , Humidity , Battery & Signal are the value at uplink time.
321
322 * Json entry 1 ~~ 8 are the last 1 ~~ 8 sampling data as specify by (% style="color:#037691" %)**AT+NOUD=8 ** (%%)Command. Each entry includes (from left to right): Temperature, Humidity, Sampling time.
323
324 === 2.2.2 HEX format Payload(Type~=0) ===
325
326
327 This is the HEX Format. As below:
328
329 (% style="color:#4472c4" %)**f86620705346276200640cba16010000000011011801e864d49c2d011a01e364d49925011901eb64d49871011901e564d497bd011a01e664d49709011901e964d49655011a01e864d495a1011a01e864d494ed011801e864d49439**
330
331 [[image:1692424009971-458.png]]
332
333
334 (% style="color:blue" %)**Version:**
335
336 These bytes include the hardware and software version.
337
338 (% style="color:#037691" %)**Higher byte:**(%%) Specify Sensor Model: 0x00 for DDS20-NB
339
340 (% style="color:#037691" %)**Lower byte:**(%%) Specify the software version: 0x64=100, means firmware version 100
341
342
343 (% style="color:blue" %)**BAT (Battery Info):**
344
345 Ex1: 0x0CBA = 3258mV
346
347
348 (% style="color:blue" %)**Signal Strength:**
349
350 NB-IoT Network signal Strength.
351
352 **Ex1: 0x16 = 22**
353
354 **0**  -113dBm or less
355
356 **1**  -111dBm
357
358 **2...30** -109dBm... -53dBm
359
360 **31**   -51dBm or greater
361
362 **99**    Not known or not detectable
363
364
365 (% style="color:blue" %)**TimeStamp:   **
366
367 Unit TimeStamp Example: 64d49439(H) = 1691653177(D)
368
369 Put the decimal value into this link(https:~/~/www.epochconverter.com/) to get the time.
370
371
372 === 2.2.3 ThingsBoard Payload(Type~=3) ===
373
374
375 Type3 payload special design for ThingsBoard, it will also configure other default server to ThingsBoard.
376
377 (% style="color:#4472c4" %)**{"IMEI":866207053462762,"temperature":29.2,"humidity":54.2,"battery":3.27,"signal":24}**
378
379
380 === 2.2.4 ThingSpeak Payload(Type~=1) ===
381
382
383 This payload meets ThingSpeak platform requirement. It includes only four fields. Form 1~~4 are:
384
385 Temperature, Humidity, Battery & Signal. This payload type only valid for ThingsSpeak Platform
386
387 As below:
388
389 (% style="color:#4472c4" %)**field1=27.9&field2=49.9&field3=3.23&field4=28**
390
391
392 == 2.3  ​Uplink Payload ==
393
394
395 (((
396 DDS20-NB will uplink payload via LoRaWAN with below payload format: 
397 )))
398
399 (((
400 Uplink payload includes in total 8 bytes.
401 )))
402
403 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:510px" %)
404 |=(% style="width: 95px; background-color:#4F81BD;color:white" %)Size(bytes)|=(% style="width: 61px; background-color:#4F81BD;color:white" %)2|=(% style="background-color:#4F81BD;color:white" %)2|=(% style="background-color:#4F81BD;color:white" %)1|=(% style="background-color:#4F81BD;color:white" %)2|=(% style="background-color:#4F81BD;color:white" %)1
405 |(% style="width:95px" %)Value|(% style="width:61px" %)[[BAT>>||anchor="H2.3.1A0BatteryInfo"]]|(((
406 [[Distance>>||anchor="H2.3.2A0Distance"]]
407 (unit: mm)
408 )))|[[Digital Interrupt (Optional)>>||anchor="H2.3.3A0InterruptPin"]]|(((
409 [[Temperature (Optional)>>||anchor="H2.3.4A0DS18B20Temperaturesensor"]]
410 )))|[[Sensor Flag>>||anchor="H2.3.5A0SensorFlag"]]
411
412 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/DDS20-LB_LoRaWAN_Ultrasonic_Liquid_Level_Sensor_User_Manual/WebHome/%E5%BE%AE%E4%BF%A1%E6%88%AA%E5%9B%BE_20230702135733.png?width=964&height=215&rev=1.1||alt="微信截图_20230702135733.png"]]
413
414
415 === 2.3.1  Battery Info ===
416
417
418 Check the battery voltage for DDS20-NB.
419
420 Ex1: 0x0B45 = 2885mV
421
422 Ex2: 0x0B49 = 2889mV
423
424
425 === 2.3.2  Distance ===
426
427
428 (((
429 Get the distance. Flat object range 20mm - 2000mm.
430 )))
431
432 (((
433 For example, if the data you get from the register is **0x06 0x05**, the distance between the sensor and the measured object is(% style="color:#4472c4" %)** **
434
435 (% style="color:blue" %)**0605(H) = 1541 (D) = 1541 mm.**
436 )))
437
438 * If the sensor value is 0x0000, it means system doesn't detect ultrasonic sensor.
439
440 * If the sensor value lower than 0x0014 (20mm), the sensor value will be invalid.
441
442 === 2.3.3  Interrupt Pin ===
443
444
445 This data field shows if this packet is generated by interrupt or not.
446
447 **Example:**
448
449 0x00: Normal uplink packet.
450
451 0x01: Interrupt Uplink Packet.
452
453
454 === 2.3.4  DS18B20 Temperature sensor ===
455
456
457 This is optional, user can connect external DS18B20 sensor to the +3.3v, 1-wire and GND pin . and this field will report temperature.
458
459 **Example**:
460
461 If payload is: 0105H:  (0105 & FC00 == 0), temp = 0105H /10 = 26.1 degree
462
463 If payload is: FF3FH :  (FF3F & FC00 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.
464
465
466 === 2.3.5  Sensor Flag ===
467
468
469 (((
470 0x01: Detect Ultrasonic Sensor
471 )))
472
473 (((
474 0x00: No Ultrasonic Sensor
475
476
477 )))
478
479 == 2.4 Test Uplink and Change Update Interval ==
480
481
482 By default, Sensor will send uplinks (% style="color:blue" %)**every 2 hours**(%%) & AT+NOUD=8
483
484 User can use below commands to change the (% style="color:blue" %)**uplink interval**.
485
486 (% style="color:#037691" %)**AT+TDC=600 ** (%%) ~/~/ Set Update Interval to 600s
487
488 User can also push the button for more than 1 seconds to activate an uplink.
489
490
491 == 2.5 Multi-Samplings and One uplink ==
492
493
494 To save battery life, DDS20-NB will sample temperature & humidity data every 15 minutes and send one uplink every 2 hours. So each uplink it will include 8 stored data + 1 real-time data. They are defined by:
495
496 * (% style="color:#037691" %)**AT+TR=900**   (%%) ~/~/ The unit is seconds, and the default is to record data once every 900 seconds (15 minutes, the minimum can be set to 180 seconds)
497
498 * (% style="color:#037691" %)**AT+NOUD=8**     (%%)~/~/  The device uploads 8 sets of recorded data by default. Up to 32 sets of record data can be uploaded.
499
500 The diagram below explains the relationship between TR, NOUD, and TDC more clearly:
501
502 [[image:1692424376354-959.png]]
503
504
505 == 2.6 Trggier an uplink by external interrupt ==
506
507
508 DDS20-NB has an external trigger interrupt function. Users can use the PB15 pin to trigger the upload of data packets.
509
510 (% style="color:blue" %)**AT command:**
511
512 * (% style="color:#037691" %)**AT+INTMOD **(%%) ~/~/ Set the trigger interrupt mode
513
514 * (% style="color:#037691" %)**AT+INTMOD=0 **(%%) ~/~/ Disable Interrupt
515
516 * (% style="color:#037691" %)**AT+INTMOD=1 **(%%) ~/~/ Trigger by rising and falling edge
517
518 * (% style="color:#037691" %)**AT+INTMOD=2 **(%%) ~/~/ Trigger by falling edge
519
520 * (% style="color:#037691" %)**AT+INTMOD=3  **(%%) ~/~/ Trigger by rising edge
521
522 = 3. Configure DDS20-NB =
523
524 == 3.1 Configure Methods ==
525
526
527 DDS20-NB supports below configure method:
528
529 * AT Command via Bluetooth Connection (**Recommended**): [[BLE Configure Instruction>>http://wiki.dragino.com/xwiki/bin/view/Main/BLE%20Bluetooth%20Remote%20Configure/]].
530
531 * AT Command via UART Connection : See [[UART Connection>>http://wiki.dragino.com/xwiki/bin/view/Main/UART%20Access%20for%20LoRa%20ST%20v4%20base%20model/#H2.3UARTConnectionforSN50v3basemotherboard]].
532
533 == 3.2 AT Commands Set ==
534
535
536 AT+<CMD>?        : Help on <CMD>
537
538 AT+<CMD>         : Run <CMD>
539
540 AT+<CMD>=<value> : Set the value
541
542 AT+<CMD>=?       : Get the value
543
544
545 (% style="color:blue" %)**General Commands**      
546
547 AT                    : Attention       
548
549 AT?  : Short Help     
550
551 ATZ  : MCU Reset    
552
553 AT+TDC  : Application Data Transmission Interval
554
555 AT+CFG  : Print all configurations
556
557 AT+CFGMOD           : Working mode selection
558
559 AT+DEUI  : Get or set the Device ID
560
561 AT+INTMOD            : Set the trigger interrupt mode
562
563 AT+5VT           : Set extend the time of 5V power  
564
565 AT+PRO          : Choose agreement
566
567 AT+RXDL  : Extend the sending and receiving time
568
569 AT+DNSCFG  : Get or Set DNS Server
570
571 AT+GETSENSORVALUE   : Returns the current sensor measurement
572
573 AT+NOUD  : Get or Set the number of data to be uploaded
574
575 AT+CDP     : Read or Clear cached data
576
577 AT+SHTEMP:  Get or Set alarm of temp
578
579 AT+SHHUM:  Get or Set alarm of moisture
580
581 AT+SERVADDR :  Server Address
582
583
584 (% style="color:blue" %)**UDP Management**
585
586 AT+CFM  :  Upload confirmation mode (only valid for UDP)
587
588
589 (% style="color:blue" %)**MQTT Management**
590
591 AT+CLIENT               : Get or Set MQTT client
592
593 AT+UNAME              : Get or Set MQTT Username
594
595 AT+PWD                  : Get or Set MQTT password
596
597 AT+PUBTOPIC  : Get or Set MQTT publish topic
598
599 AT+SUBTOPIC  : Get or Set MQTT subscription topic
600
601
602 (% style="color:blue" %)**Information**          
603
604 AT+FDR  : Factory Data Reset
605
606 AT+PWORD  : Serial Access Password
607
608 AT+LDATA  : Get the last upload data
609
610 AT+CDP  : Read or Clear cached data
611
612
613 = 4. Battery & Power Consumption =
614
615
616 DDS20-NB use ER26500 + SPC1520 battery pack. See below link for detail information about the battery info and how to replace.
617
618 [[**Battery Info & Power Consumption Analyze**>>http://wiki.dragino.com/xwiki/bin/view/Main/How%20to%20calculate%20the%20battery%20life%20of%20Dragino%20sensors%3F/]] .
619
620
621 = 5. Firmware update =
622
623
624 User can change device firmware to::
625
626 * Update with new features.
627
628 * Fix bugs.
629
630 Firmware and changelog can be downloaded from : **[[Firmware download link>>https://www.dropbox.com/sh/nyzeu0lf0amcaek/AAC6UZrqyTcAyJgXOH7l9F9Ka?dl=0]]**
631
632 Methods to Update Firmware:
633
634 * (Recommended way) OTA firmware update via BLE: [[**Instruction**>>url:http://wiki.dragino.com/xwiki/bin/view/Main/BLE_Firmware_Update_NB_Sensors_BC660K-GL/]].
635
636 * Update through UART TTL interface : **[[Instruction>>url:http://wiki.dragino.com/xwiki/bin/view/Main/UART%20Access%20for%20LoRa%20ST%20v4%20base%20model/#H1.LoRaSTv4baseHardware]]**.
637
638 = 6. FAQ =
639
640 == 6.1 How can I access t BC660K-GL AT Commands? ==
641
642
643 User can access to BC660K-GL directly and send AT Commands.
644
645 [[See BC660K-GL AT Command set>>url:https://www.dropbox.com/sh/5f6ssda5fum8rvs/AABT68l8ZzWOvZ5eg2qwOoFda?dl=0]]
646
647
648 = 7.  Trouble Shooting =
649
650 == 7.1  Why i always see 0x0000 or 0 for the distance value? ==
651
652
653 (((
654 DDS20-NB has a strict [[**installation requirement**>>||anchor="H1.5A0InstallDDS20-NB"]]. Please make sure the installation method exactly follows up with the installation requirement. Otherwise, the reading might be always 0x00.
655
656 If you have followed the instruction requirement exactly but still see the 0x00 reading issue, please. please double-check the decoder, you can check the raw payload to verify.
657
658
659 )))
660
661 = 8. Order Info =
662
663
664 Part Number: (% style="color:blue" %)**DDS20-NB-XX**
665
666 (% style="color:red" %)**XX**(%%):
667
668 * (% style="color:#037691" %)**GE**(%%): General version ( Exclude SIM card)
669
670 * (% style="color:#037691" %)**1D**(%%): with 1NCE* 10 years 500MB SIM card and Pre-configure to DataCake server
671
672 (% style="color:#037691" %)**1NCE SIM Card NB-IoT network coverage**(%%): Austria, Belgium, Bulgaria, Croatia, Czech Republic, Denmark, Finland, Germany, Great Britain, Greece, Hungary, Ireland, Italy, Latvia, Malta, Netherlands, Norway, Puerto Rico, Russia, Slovak , Republic, Slovenia, Spain, Sweden, Switzerland, Taiwan, USA, US Virgin Islands
673
674
675 = 9. ​Packing Info =
676
677
678 (% style="color:#037691" %)**Package Includes**:
679
680 * DDS20-NB NB-IoT Ultrasonic liquid level sensor x 1
681
682 * External antenna x 1
683
684 (% style="color:#037691" %)**Dimension and weight**:
685
686 * Device Size: 13.0 x 5 x 4.5 cm
687
688 * Device Weight: 150g
689
690 * Package Size / pcs : 14.0 x 8x 5 cm
691
692 * Weight / pcs : 180g
693
694 = 10. Support =
695
696
697 * Support is provided Monday to Friday, from 09:00 to 18:00 GMT+8. Due to different timezones we cannot offer live support. However, your questions will be answered as soon as possible in the before-mentioned schedule.
698
699 * Provide as much information as possible regarding your enquiry (product models, accurately describe your problem and steps to replicate it etc) and send a mail to [[Support@dragino.cc>>mailto:Support@dragino.cc]].
700
701 (% style="display:none" %) (%%)