Skip to Content
Version 86.4 by Xiaoling on 2023/09/12 10:38
Show last authors
1 (% style="text-align:center" %)
2 [[image:image-20230912085600-1.png||height="519" width="731"]]
3
4
5
6
7
8
9
10
11
12 **Table of Contents:**
13
14 {{toc/}}
15
16
17
18
19
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 Suitable Container & Liquid ==
104
105
106 * Solid Wall container such as: steel, iron, glass, ceramics, non-foaming plastics etc.
107 * Container shape is regular, and surface is smooth.
108 * Container Thickness:
109 ** Pure metal material.  2~~8mm, best is 3~~5mm
110 ** Pure non metal material: <10 mm
111 * Pure liquid without irregular deposition.
112
113 (% style="display:none" %)
114
115 == 1.5 Install DDS20-NB ==
116
117
118 (% style="color:blue" %)**Step 1**(%%):  ** Choose the installation point.**
119
120 DDS20-NB (% style="color:red" %)**MUST**(%%) be installed on the container bottom middle position.
121
122 [[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-20220615091045-3.png?rev=1.1||alt="image-20220615091045-3.png"]]
123
124
125 (((
126 (% style="color:blue" %)**Step 2**(%%):  **Polish the installation point.**
127 )))
128
129 (((
130 For Metal Surface with paint, it is important to polish the surface, first use crude sand paper to polish the paint level , then use exquisite sand paper to polish the metal level to make it shine & smooth.
131 )))
132
133 [[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/image-20230613143052-5.png?rev=1.1||alt="image-20230613143052-5.png"]]
134
135
136 No polish needed if the container is shine metal surface without paint or non-metal container.
137
138 [[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/image-20230613143125-6.png?rev=1.1||alt="image-20230613143125-6.png"]]
139
140
141 (((
142 (% style="color:blue" %)**Step3:   **(%%)**Test the installation point.**
143 )))
144
145 (((
146 Power on DDS20-NB, check if the blue LED is on, If the blue LED is on, means the sensor works. Then put ultrasonic coupling paste on the sensor and put it tightly on the installation point.
147 )))
148
149 (((
150 It is necessary to put the coupling paste between the sensor and the container, otherwise DDS20-NB won't detect the liquid level.
151 )))
152
153 (((
154 After paste the DDS20-NB well, power on DDS20-NB. In the first 30 seconds of booting, device will check the sensors status and BLUE LED will show the status as below. After 30 seconds, BLUE LED will be off to save battery life.
155 )))
156
157
158 (((
159 (% style="color:blue" %)**LED Status:**
160 )))
161
162 * (((
163 **Onboard LED**: When power on device, the onboard LED will fast blink 4 times which means detect the sensor well.
164 )))
165
166 * (((
167 (% style="color:blue" %)**BLUE LED**(% style="color:red" %)** always ON**(%%): Sensor is power on but doesn't detect liquid. There is problem in installation point.
168 )))
169 * (((
170 (% style="color:blue" %)**BLUE LED**(% style="color:red" %)** slowly blinking**(%%): Sensor detects Liquid Level, The installation point is good.
171 )))
172
173 (((
174 DDS20-NB will enter into low power mode at 30 seconds after system reset or power on, Blue LED will be off after that.
175 )))
176
177
178 (((
179 (% style="color:red" %)**Note :**(%%)** (% style="color:blue" %)Ultrasonic coupling paste(%%)**(% style="color:blue" %) (%%) is subjected in most shipping way. So the default package doesn't include it and user needs to purchase locally.
180 )))
181
182
183 (((
184 (% style="color:blue" %)**Step4:   **(%%)**Install use Epoxy ab glue.**
185 )))
186
187 (((
188 Prepare Eproxy AB glue.
189 )))
190
191 (((
192 Put Eproxy AB glue in the sensor and press it hard on the container installation point.
193 )))
194
195 (((
196 Reset DDS20-NB and see if the BLUE LED is slowly blinking.
197 )))
198
199 [[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/image-20230809172509-1.png?rev=1.1||alt="image-20230809172509-1.png"]]
200
201 (((
202 (% style="color:red" %)**Note :**(% style="color:red; display:none" %)** **
203
204 (% style="color:red" %)**1:**(%%)** (% style="color:blue" %)Eproxy AB glue(%%)** needs 3~~ 5 minutes to stable attached. we can use other glue material to keep it in the position.
205 )))
206
207 (((
208 (% style="color:red" %)**2:**(%%)** (% style="color:blue" %)Eproxy AB glue(%%)** is subjected in most shipping way. So the default package doesn't include it and user needs to purchase locally.
209 )))
210
211
212 == 1.6 Applications ==
213
214
215 * Smart liquid control solution
216
217 * Smart liquefied gas solution
218
219 == 1.7 Precautions ==
220
221
222 * At room temperature, containers of different materials, such as steel, glass, iron, ceramics, non-foamed plastics and other dense materials, have different detection blind areas and detection limit heights.
223
224 * For containers of the same material at room temperature, the detection blind zone and detection limit height are also different for the thickness of the container.
225
226 * When the detected liquid level exceeds the effective detection value of the sensor, and the liquid level of the liquid to be measured shakes or tilts, the detected liquid height is unstable.
227
228 (% style="display:none" %)
229
230
231
232 == 1.8 Sleep mode and working mode ==
233
234
235 (% 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.
236
237 (% 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.
238
239
240 == 1.9 Button & LEDs ==
241
242
243 [[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675071855856-879.png]]
244
245
246 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
247 |=(% 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**
248 |(% style="width:167px" %)Pressing ACT between 1s < time < 3s|(% style="width:117px" %)Send an uplink|(% style="width:225px" %)(((
249 If sensor has already attached to NB-IoT network, sensor will send an uplink packet, (% style="color:blue" %)**blue led** (%%)will blink once.
250 Meanwhile, BLE module will be active and user can connect via BLE to configure device.
251 )))
252 |(% style="width:167px" %)Pressing ACT for more than 3s|(% style="width:117px" %)Active Device|(% style="width:225px" %)(((
253 (% 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.
254 (% style="color:green" %)**Green led**(%%) will solidly turn on for 5 seconds after joined in network.
255 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.
256 )))
257 |(% 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.
258
259 == 1.10 BLE connection ==
260
261
262 DDS20-NB support BLE remote configure and firmware update.
263
264
265 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:
266
267 * Press button to send an uplink
268 * Press button to active device.
269 * Device Power on or reset.
270
271 If there is no activity connection on BLE in 60 seconds, sensor will shut down BLE module to enter low power mode.
272
273
274 == 1.11 Pin Definitions & Switch ==
275
276
277 [[image:image-20230819104805-5.png]]
278
279
280 === 1.11.1 Jumper JP2 ===
281
282
283 Power on Device when put this jumper.
284
285
286 === 1.11.2 BOOT MODE / SW1 ===
287
288
289 **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.
290
291 **2)** (% style="color:blue" %)**Flash**(%%): work mode, device starts to work and send out console output for further debug
292
293
294 === 1.11.3 Reset Button ===
295
296
297 Press to reboot the device.
298
299 (% style="display:none" %)
300
301
302 == 1.12 Mechanical ==
303
304
305 [[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"]]
306
307 [[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"]]
308
309 [[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"]]
310
311
312 (% style="color:blue" %)**Probe Mechanical:**
313
314 [[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"]]
315
316 [[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"]]
317
318
319 = 2. Use DDS20-NB to communicate with IoT Server =
320
321 == 2.1 Send data to IoT server via NB-IoT network ==
322
323
324 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.
325
326
327 Below shows the network structure:
328
329 [[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"]]
330
331
332 There are two version: (% style="color:blue" %)**-GE**(%%) and (% style="color:blue" %)**-1D**(%%) version of DDS45-NB.
333
334
335 (% 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.
336
337 * 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]].
338
339 * 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]]. 
340
341 Below shows result of different server as a glance.
342
343 (% border="1" cellspacing="4" style="width:515px" %)
344 |(% 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**
345 |(% 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" %)(((
346 (% style="text-align:center" %)
347 [[image:image-20230819113244-8.png||height="183" width="367"]]
348 )))|(% style="width:170px" %)
349 |(% 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" %)(((
350 (% style="text-align:center" %)
351 [[image:image-20230819113244-9.png||height="119" width="367"]]
352 )))|(% style="width:170px" %)
353 |(% 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" %)
354 |(% 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" %)
355 |(% 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" %)
356 |(% 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" %)(((
357 (% style="text-align:center" %)
358 [[image:image-20230819113244-10.png||height="104" width="367"]]
359 )))|(% style="width:170px" %)
360 |(% 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" %)(((
361 (% style="text-align:center" %)
362 [[image:image-20230819113244-11.png||height="141" width="367"]]
363 )))|(% style="width:170px" %)
364
365 (% 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]].
366
367
368 == 2.2 ​Payload Types ==
369
370
371 To meet different server requirement, DDS20-NB supports different payload type.
372
373 **Includes:**
374
375 * [[General JSON format payload>>||anchor="H2.2.1GeneralJsonFormat28Type3D529"]]. (Type=5)
376
377 * [[HEX format Payload>>||anchor="H2.2.2HEXformatPayload28Type3D029"]]. (Type=0)
378
379 * [[ThingSpeak Format>>||anchor="H2.2.4ThingSpeakPayload28Type3D129"]]. (Type=1)
380
381 * [[ThingsBoard Format>>||anchor="H2.2.3ThingsBoardPayload28Type3D329"]]. (Type=3)
382
383 User can specify the payload type when choose the connection protocol. Example:
384
385 (% style="color:#037691" %)**AT+PRO=2,0**  (%%) ~/~/ Use UDP Connection & hex Payload
386
387 (% style="color:#037691" %)**AT+PRO=2,5**   (%%) ~/~/ Use UDP Connection & Json Payload
388
389 (% style="color:#037691" %)**AT+PRO=3,5 ** (%%) ~/~/ Use MQTT Connection & Json Payload
390
391
392 === 2.2.1 General Json Format(Type~=5) ===
393
394
395 This is the General Json Format. As below:
396
397 (% 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}}**
398
399
400 (% style="color:red" %)**Notice, from above payload:**
401
402 * Temperature , Humidity , Battery & Signal are the value at uplink time.
403
404 * 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.
405
406 === 2.2.2 HEX format Payload(Type~=0) ===
407
408
409 This is the HEX Format. As below:
410
411 (% style="color:#4472c4" %)**f86620705346276200640cba16010000000011011801e864d49c2d011a01e364d49925011901eb64d49871011901e564d497bd011a01e664d49709011901e964d49655011a01e864d495a1011a01e864d494ed011801e864d49439**
412
413 [[image:1692424009971-458.png]]
414
415
416 (% style="color:blue" %)**Version:**
417
418 These bytes include the hardware and software version.
419
420 (% style="color:#037691" %)**Higher byte:**(%%) Specify Sensor Model: 0x00 for DDS20-NB
421
422 (% style="color:#037691" %)**Lower byte:**(%%) Specify the software version: 0x64=100, means firmware version 100
423
424
425 (% style="color:blue" %)**BAT (Battery Info):**
426
427 Ex1: 0x0CBA = 3258mV
428
429
430 (% style="color:blue" %)**Signal Strength:**
431
432 NB-IoT Network signal Strength.
433
434 **Ex1: 0x16 = 22**
435
436 **0**  -113dBm or less
437
438 **1**  -111dBm
439
440 **2...30** -109dBm... -53dBm
441
442 **31**   -51dBm or greater
443
444 **99**    Not known or not detectable
445
446
447 (% style="color:blue" %)**TimeStamp:   **
448
449 Unit TimeStamp Example: 64d49439(H) = 1691653177(D)
450
451 Put the decimal value into this link(https:~/~/www.epochconverter.com/) to get the time.
452
453
454 === 2.2.3 ThingsBoard Payload(Type~=3) ===
455
456
457 Type3 payload special design for ThingsBoard, it will also configure other default server to ThingsBoard.
458
459 (% style="color:#4472c4" %)**{"IMEI":866207053462762,"temperature":29.2,"humidity":54.2,"battery":3.27,"signal":24}**
460
461
462 === 2.2.4 ThingSpeak Payload(Type~=1) ===
463
464
465 This payload meets ThingSpeak platform requirement. It includes only four fields. Form 1~~4 are:
466
467 Temperature, Humidity, Battery & Signal. This payload type only valid for ThingsSpeak Platform
468
469 As below:
470
471 (% style="color:#4472c4" %)**field1=27.9&field2=49.9&field3=3.23&field4=28**
472
473
474 == 2.3  ​Uplink Payload ==
475
476
477 (((
478 DDS20-NB will uplink payload via LoRaWAN with below payload format: 
479 )))
480
481 (((
482 Uplink payload includes in total 8 bytes.
483 )))
484
485 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:510px" %)
486 |=(% 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
487 |(% style="width:95px" %)Value|(% style="width:61px" %)[[BAT>>||anchor="H2.3.1A0BatteryInfo"]]|(((
488 [[Distance>>||anchor="H2.3.2A0Distance"]]
489 (unit: mm)
490 )))|[[Digital Interrupt (Optional)>>||anchor="H2.3.3A0InterruptPin"]]|(((
491 [[Temperature (Optional)>>||anchor="H2.3.4A0DS18B20Temperaturesensor"]]
492 )))|[[Sensor Flag>>||anchor="H2.3.5A0SensorFlag"]]
493
494 [[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"]]
495
496
497 === 2.3.1  Battery Info ===
498
499
500 Check the battery voltage for DDS20-NB.
501
502 Ex1: 0x0B45 = 2885mV
503
504 Ex2: 0x0B49 = 2889mV
505
506
507 === 2.3.2  Distance ===
508
509
510 (((
511 Get the distance. Flat object range 20mm - 2000mm.
512 )))
513
514 (((
515 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" %)** **
516
517 (% style="color:blue" %)**0605(H) = 1541 (D) = 1541 mm.**
518 )))
519
520 * If the sensor value is 0x0000, it means system doesn't detect ultrasonic sensor.
521
522 * If the sensor value lower than 0x0014 (20mm), the sensor value will be invalid.
523
524 === 2.3.3  Interrupt Pin ===
525
526
527 This data field shows if this packet is generated by interrupt or not.
528
529 **Example:**
530
531 0x00: Normal uplink packet.
532
533 0x01: Interrupt Uplink Packet.
534
535
536 === 2.3.4  DS18B20 Temperature sensor ===
537
538
539 This is optional, user can connect external DS18B20 sensor to the +3.3v, 1-wire and GND pin . and this field will report temperature.
540
541 **Example**:
542
543 If payload is: 0105H:  (0105 & FC00 == 0), temp = 0105H /10 = 26.1 degree
544
545 If payload is: FF3FH :  (FF3F & FC00 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.
546
547
548 === 2.3.5  Sensor Flag ===
549
550
551 (((
552 0x01: Detect Ultrasonic Sensor
553 )))
554
555 (((
556 0x00: No Ultrasonic Sensor
557
558
559 )))
560
561 == 2.4 Test Uplink and Change Update Interval ==
562
563
564 By default, Sensor will send uplinks (% style="color:blue" %)**every 2 hours**(%%) & AT+NOUD=8
565
566 User can use below commands to change the (% style="color:blue" %)**uplink interval**.
567
568 (% style="color:#037691" %)**AT+TDC=600 ** (%%) ~/~/ Set Update Interval to 600s
569
570 User can also push the button for more than 1 seconds to activate an uplink.
571
572
573 == 2.5 Multi-Samplings and One uplink ==
574
575
576 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:
577
578 * (% 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)
579
580 * (% 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.
581
582 The diagram below explains the relationship between TR, NOUD, and TDC more clearly:
583
584 [[image:1692424376354-959.png]]
585
586
587 == 2.6 Trggier an uplink by external interrupt ==
588
589
590 DDS20-NB has an external trigger interrupt function. Users can use the PB15 pin to trigger the upload of data packets.
591
592 (% style="color:blue" %)**AT command:**
593
594 * (% style="color:#037691" %)**AT+INTMOD **(%%) ~/~/ Set the trigger interrupt mode
595
596 * (% style="color:#037691" %)**AT+INTMOD=0 **(%%) ~/~/ Disable Interrupt
597
598 * (% style="color:#037691" %)**AT+INTMOD=1 **(%%) ~/~/ Trigger by rising and falling edge
599
600 * (% style="color:#037691" %)**AT+INTMOD=2 **(%%) ~/~/ Trigger by falling edge
601
602 * (% style="color:#037691" %)**AT+INTMOD=3  **(%%) ~/~/ Trigger by rising edge
603
604 = 3. Configure DDS20-NB =
605
606 == 3.1 Configure Methods ==
607
608
609 DDS20-NB supports below configure method:
610
611 * AT Command via Bluetooth Connection (**Recommended**): [[BLE Configure Instruction>>http://wiki.dragino.com/xwiki/bin/view/Main/BLE%20Bluetooth%20Remote%20Configure/]].
612
613 * 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]].
614
615 == 3.2 AT Commands Set ==
616
617
618 AT+<CMD>?        : Help on <CMD>
619
620 AT+<CMD>         : Run <CMD>
621
622 AT+<CMD>=<value> : Set the value
623
624 AT+<CMD>=?       : Get the value
625
626
627 (% style="color:blue" %)**General Commands**      
628
629 AT                    : Attention       
630
631 AT?  : Short Help     
632
633 ATZ  : MCU Reset    
634
635 AT+TDC  : Application Data Transmission Interval
636
637 AT+CFG  : Print all configurations
638
639 AT+CFGMOD           : Working mode selection
640
641 AT+DEUI  : Get or set the Device ID
642
643 AT+INTMOD            : Set the trigger interrupt mode
644
645 AT+5VT           : Set extend the time of 5V power  
646
647 AT+PRO          : Choose agreement
648
649 AT+RXDL  : Extend the sending and receiving time
650
651 AT+DNSCFG  : Get or Set DNS Server
652
653 AT+GETSENSORVALUE   : Returns the current sensor measurement
654
655 AT+NOUD  : Get or Set the number of data to be uploaded
656
657 AT+CDP     : Read or Clear cached data
658
659 AT+SHTEMP:  Get or Set alarm of temp
660
661 AT+SHHUM:  Get or Set alarm of moisture
662
663 AT+SERVADDR :  Server Address
664
665
666 (% style="color:blue" %)**UDP Management**
667
668 AT+CFM  :  Upload confirmation mode (only valid for UDP)
669
670
671 (% style="color:blue" %)**MQTT Management**
672
673 AT+CLIENT               : Get or Set MQTT client
674
675 AT+UNAME              : Get or Set MQTT Username
676
677 AT+PWD                  : Get or Set MQTT password
678
679 AT+PUBTOPIC  : Get or Set MQTT publish topic
680
681 AT+SUBTOPIC  : Get or Set MQTT subscription topic
682
683
684 (% style="color:blue" %)**Information**          
685
686 AT+FDR  : Factory Data Reset
687
688 AT+PWORD  : Serial Access Password
689
690 AT+LDATA  : Get the last upload data
691
692 AT+CDP  : Read or Clear cached data
693
694
695 = 4. Battery & Power Consumption =
696
697
698 DDS20-NB use ER26500 + SPC1520 battery pack. See below link for detail information about the battery info and how to replace.
699
700 [[**Battery Info & Power Consumption Analyze**>>http://wiki.dragino.com/xwiki/bin/view/Main/How%20to%20calculate%20the%20battery%20life%20of%20Dragino%20sensors%3F/]] .
701
702
703 = 5. Firmware update =
704
705
706 User can change device firmware to::
707
708 * Update with new features.
709
710 * Fix bugs.
711
712 Firmware and changelog can be downloaded from : **[[Firmware download link>>https://www.dropbox.com/sh/nyzeu0lf0amcaek/AAC6UZrqyTcAyJgXOH7l9F9Ka?dl=0]]**
713
714 Methods to Update Firmware:
715
716 * (Recommended way) OTA firmware update via BLE: [[**Instruction**>>url:http://wiki.dragino.com/xwiki/bin/view/Main/BLE_Firmware_Update_NB_Sensors_BC660K-GL/]].
717
718 * 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]]**.
719
720 = 6. FAQ =
721
722 == 6.1 How can I access t BC660K-GL AT Commands? ==
723
724
725 User can access to BC660K-GL directly and send AT Commands.
726
727 [[See BC660K-GL AT Command set>>url:https://www.dropbox.com/sh/5f6ssda5fum8rvs/AABT68l8ZzWOvZ5eg2qwOoFda?dl=0]]
728
729
730 = 7.  Trouble Shooting =
731
732 == 7.1  Why i always see 0x0000 or 0 for the distance value? ==
733
734
735 (((
736 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.
737
738 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.
739
740
741 )))
742
743 = 8. Order Info =
744
745
746 Part Number: (% style="color:blue" %)**DDS20-NB-XX**
747
748 (% style="color:red" %)**XX**(%%):
749
750 * (% style="color:#037691" %)**GE**(%%): General version ( Exclude SIM card)
751
752 * (% style="color:#037691" %)**1D**(%%): with 1NCE* 10 years 500MB SIM card and Pre-configure to DataCake server
753
754 (% 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
755
756
757 = 9. ​Packing Info =
758
759
760 (% style="color:#037691" %)**Package Includes**:
761
762 * DDS20-NB NB-IoT Ultrasonic liquid level sensor x 1
763
764 * External antenna x 1
765
766 (% style="color:#037691" %)**Dimension and weight**:
767
768 * Device Size: 13.0 x 5 x 4.5 cm
769
770 * Device Weight: 150g
771
772 * Package Size / pcs : 14.0 x 8x 5 cm
773
774 * Weight / pcs : 180g
775
776 = 10. Support =
777
778
779 * 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.
780
781 * 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]].
782
783 (% style="display:none" %) (%%)