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Version 86.5 by Xiaoling on 2023/09/12 10:52
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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 == 1.10 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 == 1.11 Pin Definitions & Switch ==
195
196
197 [[image:image-20230819104805-5.png]]
198
199
200 === 1.11.1 Jumper JP2 ===
201
202
203 Power on Device when put this jumper.
204
205
206 === 1.11.2 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 === 1.11.3 Reset Button ===
215
216
217 Press to reboot the device.
218
219 (% style="display:none" %)
220
221
222 == 1.12 Mechanical ==
223
224
225 [[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"]]
226
227 [[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"]]
228
229 [[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"]]
230
231
232 (% style="color:blue" %)**Probe Mechanical:**
233
234 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS20%20-%20LoRaWAN%20Liquid%20Level%20Sensor%20User%20Manual/WebHome/image-20220615090910-1.png?rev=1.1||alt="image-20220615090910-1.png"]]
235
236 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS20%20-%20LoRaWAN%20Liquid%20Level%20Sensor%20User%20Manual/WebHome/image-20220615090910-2.png?rev=1.1||alt="image-20220615090910-2.png"]]
237
238
239 = 2. Use DDS20-NB to communicate with IoT Server =
240
241 == 2.1 Send data to IoT server via NB-IoT network ==
242
243
244 The DDS20-NB is equipped with a NB-IoT module, the pre-loaded firmware in DDS20-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 DDS20-NB.
245
246
247 Below shows the network structure:
248
249 [[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"]]
250
251
252 There are two version: (% style="color:blue" %)**-GE**(%%) and (% style="color:blue" %)**-1D**(%%) version of DDS45-NB.
253
254
255 (% 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.
256
257 * 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]].
258
259 * 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]]. 
260
261 Below shows result of different server as a glance.
262
263 (% border="1" cellspacing="4" style="width:515px" %)
264 |(% 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**
265 |(% 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" %)(((
266 (% style="text-align:center" %)
267 [[image:image-20230819113244-8.png||height="183" width="367"]]
268 )))|(% style="width:170px" %)
269 |(% 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" %)(((
270 (% style="text-align:center" %)
271 [[image:image-20230819113244-9.png||height="119" width="367"]]
272 )))|(% style="width:170px" %)
273 |(% 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" %)
274 |(% 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" %)
275 |(% 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" %)
276 |(% 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" %)(((
277 (% style="text-align:center" %)
278 [[image:image-20230819113244-10.png||height="104" width="367"]]
279 )))|(% style="width:170px" %)
280 |(% 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" %)(((
281 (% style="text-align:center" %)
282 [[image:image-20230819113244-11.png||height="141" width="367"]]
283 )))|(% style="width:170px" %)
284
285 (% 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]].
286
287
288 == 2.2 ​Payload Types ==
289
290
291 To meet different server requirement, DDS20-NB supports different payload type.
292
293 **Includes:**
294
295 * [[General JSON format payload>>||anchor="H2.2.1GeneralJsonFormat28Type3D529"]]. (Type=5)
296
297 * [[HEX format Payload>>||anchor="H2.2.2HEXformatPayload28Type3D029"]]. (Type=0)
298
299 * [[ThingSpeak Format>>||anchor="H2.2.4ThingSpeakPayload28Type3D129"]]. (Type=1)
300
301 * [[ThingsBoard Format>>||anchor="H2.2.3ThingsBoardPayload28Type3D329"]]. (Type=3)
302
303 User can specify the payload type when choose the connection protocol. Example:
304
305 (% style="color:#037691" %)**AT+PRO=2,0**  (%%) ~/~/ Use UDP Connection & hex Payload
306
307 (% style="color:#037691" %)**AT+PRO=2,5**   (%%) ~/~/ Use UDP Connection & Json Payload
308
309 (% style="color:#037691" %)**AT+PRO=3,5 ** (%%) ~/~/ Use MQTT Connection & Json Payload
310
311
312 === 2.2.1 General Json Format(Type~=5) ===
313
314
315 This is the General Json Format. As below:
316
317 (% 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}}**
318
319
320 (% style="color:red" %)**Notice, from above payload:**
321
322 * Temperature , Humidity , Battery & Signal are the value at uplink time.
323
324 * 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.
325
326 === 2.2.2 HEX format Payload(Type~=0) ===
327
328
329 This is the HEX Format. As below:
330
331 (% style="color:#4472c4" %)**f86620705346276200640cba16010000000011011801e864d49c2d011a01e364d49925011901eb64d49871011901e564d497bd011a01e664d49709011901e964d49655011a01e864d495a1011a01e864d494ed011801e864d49439**
332
333 [[image:1692424009971-458.png]]
334
335
336 (% style="color:blue" %)**Version:**
337
338 These bytes include the hardware and software version.
339
340 (% style="color:#037691" %)**Higher byte:**(%%) Specify Sensor Model: 0x00 for DDS20-NB
341
342 (% style="color:#037691" %)**Lower byte:**(%%) Specify the software version: 0x64=100, means firmware version 100
343
344
345 (% style="color:blue" %)**BAT (Battery Info):**
346
347 Ex1: 0x0CBA = 3258mV
348
349
350 (% style="color:blue" %)**Signal Strength:**
351
352 NB-IoT Network signal Strength.
353
354 **Ex1: 0x16 = 22**
355
356 **0**  -113dBm or less
357
358 **1**  -111dBm
359
360 **2...30** -109dBm... -53dBm
361
362 **31**   -51dBm or greater
363
364 **99**    Not known or not detectable
365
366
367 (% style="color:blue" %)**TimeStamp:   **
368
369 Unit TimeStamp Example: 64d49439(H) = 1691653177(D)
370
371 Put the decimal value into this link(https:~/~/www.epochconverter.com/) to get the time.
372
373
374 === 2.2.3 ThingsBoard Payload(Type~=3) ===
375
376
377 Type3 payload special design for ThingsBoard, it will also configure other default server to ThingsBoard.
378
379 (% style="color:#4472c4" %)**{"IMEI":866207053462762,"temperature":29.2,"humidity":54.2,"battery":3.27,"signal":24}**
380
381
382 === 2.2.4 ThingSpeak Payload(Type~=1) ===
383
384
385 This payload meets ThingSpeak platform requirement. It includes only four fields. Form 1~~4 are:
386
387 Temperature, Humidity, Battery & Signal. This payload type only valid for ThingsSpeak Platform
388
389 As below:
390
391 (% style="color:#4472c4" %)**field1=27.9&field2=49.9&field3=3.23&field4=28**
392
393
394 == 2.3  ​Uplink Payload ==
395
396
397 (((
398 DDS20-NB will uplink payload via LoRaWAN with below payload format: 
399 )))
400
401 (((
402 Uplink payload includes in total 8 bytes.
403 )))
404
405 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:510px" %)
406 |=(% 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
407 |(% style="width:95px" %)Value|(% style="width:61px" %)[[BAT>>||anchor="H2.3.1A0BatteryInfo"]]|(((
408 [[Distance>>||anchor="H2.3.2A0Distance"]]
409 (unit: mm)
410 )))|[[Digital Interrupt (Optional)>>||anchor="H2.3.3A0InterruptPin"]]|(((
411 [[Temperature (Optional)>>||anchor="H2.3.4A0DS18B20Temperaturesensor"]]
412 )))|[[Sensor Flag>>||anchor="H2.3.5A0SensorFlag"]]
413
414 [[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"]]
415
416
417 === 2.3.1  Battery Info ===
418
419
420 Check the battery voltage for DDS20-NB.
421
422 Ex1: 0x0B45 = 2885mV
423
424 Ex2: 0x0B49 = 2889mV
425
426
427 === 2.3.2  Distance ===
428
429
430 (((
431 Get the distance. Flat object range 20mm - 2000mm.
432 )))
433
434 (((
435 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" %)** **
436
437 (% style="color:blue" %)**0605(H) = 1541 (D) = 1541 mm.**
438 )))
439
440 * If the sensor value is 0x0000, it means system doesn't detect ultrasonic sensor.
441
442 * If the sensor value lower than 0x0014 (20mm), the sensor value will be invalid.
443
444 === 2.3.3  Interrupt Pin ===
445
446
447 This data field shows if this packet is generated by interrupt or not.
448
449 **Example:**
450
451 0x00: Normal uplink packet.
452
453 0x01: Interrupt Uplink Packet.
454
455
456 === 2.3.4  DS18B20 Temperature sensor ===
457
458
459 This is optional, user can connect external DS18B20 sensor to the +3.3v, 1-wire and GND pin . and this field will report temperature.
460
461 **Example**:
462
463 If payload is: 0105H:  (0105 & FC00 == 0), temp = 0105H /10 = 26.1 degree
464
465 If payload is: FF3FH :  (FF3F & FC00 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.
466
467
468 === 2.3.5  Sensor Flag ===
469
470
471 (((
472 0x01: Detect Ultrasonic Sensor
473 )))
474
475 (((
476 0x00: No Ultrasonic Sensor
477
478
479 )))
480
481 == 2.4 Test Uplink and Change Update Interval ==
482
483
484 By default, Sensor will send uplinks (% style="color:blue" %)**every 2 hours**(%%) & AT+NOUD=8
485
486 User can use below commands to change the (% style="color:blue" %)**uplink interval**.
487
488 (% style="color:#037691" %)**AT+TDC=600 ** (%%) ~/~/ Set Update Interval to 600s
489
490 User can also push the button for more than 1 seconds to activate an uplink.
491
492
493 == 2.5 Multi-Samplings and One uplink ==
494
495
496 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:
497
498 * (% 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)
499
500 * (% 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.
501
502 The diagram below explains the relationship between TR, NOUD, and TDC more clearly:
503
504 [[image:1692424376354-959.png]]
505
506
507 == 2.6 Trggier an uplink by external interrupt ==
508
509
510 DDS20-NB has an external trigger interrupt function. Users can use the PB15 pin to trigger the upload of data packets.
511
512 (% style="color:blue" %)**AT command:**
513
514 * (% style="color:#037691" %)**AT+INTMOD **(%%) ~/~/ Set the trigger interrupt mode
515
516 * (% style="color:#037691" %)**AT+INTMOD=0 **(%%) ~/~/ Disable Interrupt
517
518 * (% style="color:#037691" %)**AT+INTMOD=1 **(%%) ~/~/ Trigger by rising and falling edge
519
520 * (% style="color:#037691" %)**AT+INTMOD=2 **(%%) ~/~/ Trigger by falling edge
521
522 * (% style="color:#037691" %)**AT+INTMOD=3  **(%%) ~/~/ Trigger by rising edge
523
524 = 3. Configure DDS20-NB =
525
526 == 3.1 Configure Methods ==
527
528
529 DDS20-NB supports below configure method:
530
531 * AT Command via Bluetooth Connection (**Recommended**): [[BLE Configure Instruction>>http://wiki.dragino.com/xwiki/bin/view/Main/BLE%20Bluetooth%20Remote%20Configure/]].
532
533 * 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]].
534
535 == 3.2 AT Commands Set ==
536
537
538 AT+<CMD>?        : Help on <CMD>
539
540 AT+<CMD>         : Run <CMD>
541
542 AT+<CMD>=<value> : Set the value
543
544 AT+<CMD>=?       : Get the value
545
546
547 (% style="color:blue" %)**General Commands**      
548
549 AT                    : Attention       
550
551 AT?  : Short Help     
552
553 ATZ  : MCU Reset    
554
555 AT+TDC  : Application Data Transmission Interval
556
557 AT+CFG  : Print all configurations
558
559 AT+CFGMOD           : Working mode selection
560
561 AT+DEUI  : Get or set the Device ID
562
563 AT+INTMOD            : Set the trigger interrupt mode
564
565 AT+5VT           : Set extend the time of 5V power  
566
567 AT+PRO          : Choose agreement
568
569 AT+RXDL  : Extend the sending and receiving time
570
571 AT+DNSCFG  : Get or Set DNS Server
572
573 AT+GETSENSORVALUE   : Returns the current sensor measurement
574
575 AT+NOUD  : Get or Set the number of data to be uploaded
576
577 AT+CDP     : Read or Clear cached data
578
579 AT+SHTEMP:  Get or Set alarm of temp
580
581 AT+SHHUM:  Get or Set alarm of moisture
582
583 AT+SERVADDR :  Server Address
584
585
586 (% style="color:blue" %)**UDP Management**
587
588 AT+CFM  :  Upload confirmation mode (only valid for UDP)
589
590
591 (% style="color:blue" %)**MQTT Management**
592
593 AT+CLIENT               : Get or Set MQTT client
594
595 AT+UNAME              : Get or Set MQTT Username
596
597 AT+PWD                  : Get or Set MQTT password
598
599 AT+PUBTOPIC  : Get or Set MQTT publish topic
600
601 AT+SUBTOPIC  : Get or Set MQTT subscription topic
602
603
604 (% style="color:blue" %)**Information**          
605
606 AT+FDR  : Factory Data Reset
607
608 AT+PWORD  : Serial Access Password
609
610 AT+LDATA  : Get the last upload data
611
612 AT+CDP  : Read or Clear cached data
613
614
615 = 4. Battery & Power Consumption =
616
617
618 DDS20-NB use ER26500 + SPC1520 battery pack. See below link for detail information about the battery info and how to replace.
619
620 [[**Battery Info & Power Consumption Analyze**>>http://wiki.dragino.com/xwiki/bin/view/Main/How%20to%20calculate%20the%20battery%20life%20of%20Dragino%20sensors%3F/]] .
621
622
623 = 5. Firmware update =
624
625
626 User can change device firmware to::
627
628 * Update with new features.
629
630 * Fix bugs.
631
632 Firmware and changelog can be downloaded from : **[[Firmware download link>>https://www.dropbox.com/sh/nyzeu0lf0amcaek/AAC6UZrqyTcAyJgXOH7l9F9Ka?dl=0]]**
633
634 Methods to Update Firmware:
635
636 * (Recommended way) OTA firmware update via BLE: [[**Instruction**>>url:http://wiki.dragino.com/xwiki/bin/view/Main/BLE_Firmware_Update_NB_Sensors_BC660K-GL/]].
637
638 * 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]]**.
639
640 = 6. FAQ =
641
642 == 6.1 How can I access t BC660K-GL AT Commands? ==
643
644
645 User can access to BC660K-GL directly and send AT Commands.
646
647 [[See BC660K-GL AT Command set>>url:https://www.dropbox.com/sh/5f6ssda5fum8rvs/AABT68l8ZzWOvZ5eg2qwOoFda?dl=0]]
648
649
650 = 7.  Trouble Shooting =
651
652 == 7.1  Why i always see 0x0000 or 0 for the distance value? ==
653
654
655 (((
656 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.
657
658 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.
659
660
661 )))
662
663 = 8. Order Info =
664
665
666 Part Number: (% style="color:blue" %)**DDS20-NB-XX**
667
668 (% style="color:red" %)**XX**(%%):
669
670 * (% style="color:#037691" %)**GE**(%%): General version ( Exclude SIM card)
671
672 * (% style="color:#037691" %)**1D**(%%): with 1NCE* 10 years 500MB SIM card and Pre-configure to DataCake server
673
674 (% 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
675
676
677 = 9. ​Packing Info =
678
679
680 (% style="color:#037691" %)**Package Includes**:
681
682 * DDS20-NB NB-IoT Ultrasonic liquid level sensor x 1
683
684 * External antenna x 1
685
686 (% style="color:#037691" %)**Dimension and weight**:
687
688 * Device Size: 13.0 x 5 x 4.5 cm
689
690 * Device Weight: 150g
691
692 * Package Size / pcs : 14.0 x 8x 5 cm
693
694 * Weight / pcs : 180g
695
696 = 10. Support =
697
698
699 * 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.
700
701 * 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]].
702
703 (% style="display:none" %) (%%)