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Version 77.5 by Xiaoling on 2023/06/13 14:11
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1 (% style="text-align:center" %)
2 [[image:image-20230613133716-2.png||height="717" width="717"]]
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11 **Table of Contents：**
12
13 {{toc/}}
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19
20 = 1. Introduction =
21
22 == 1.1 What is LoRaWAN Ultrasonic liquid level Sensor ==
23
24
25 The Dragino DDS20-LB is a (% style="color:blue" %)**LoRaWAN Ultrasonic liquid level sensor**(%%) for Internet of Things solution. It uses (% style="color:blue" %)**none-contact method **(%%)to measure the (% style="color:blue" %)**height of liquid**(%%) in a container without opening the container, and send the value via LoRaWAN network to IoT Server.
26
27 The DDS20-LB sensor is installed directly below the container to detect the height of the liquid level. User doesn't need to open a hole on the container to be tested. The none-contact measurement makes the measurement safety, easier and possible for some strict situation. 
28
29 DDS20-LB uses (% style="color:blue" %)**ultrasonic sensing technology**(%%) for distance measurement. DDS20-LB is of high accuracy to measure various liquid such as: (% style="color:blue" %)**toxic substances**(%%), (% style="color:blue" %)**strong acids**(%%), (% style="color:blue" %)**strong alkalis**(%%) and (% style="color:blue" %)**various pure liquids**(%%) in high-temperature and high-pressure airtight containers.
30
31 The LoRa wireless technology used in DDS20-LB allows device to send data and reach extremely long ranges at low data-rates. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption.
32
33 DDS20-LB (% style="color:blue" %)**supports BLE configure**(%%) and (% style="color:blue" %)**wireless OTA update**(%%) which make user easy to use.
34
35 DDS20-LB is powered by (% style="color:blue" %)**8500mAh Li-SOCI2 battery**(%%), it is designed for long term use up to 5 years.
36
37 Each DDS20-LB is pre-load with a set of unique keys for LoRaWAN registrations, register these keys to local LoRaWAN server and it will auto connect after power on.
38
39 [[image:image-20230613140115-3.png||height="453" width="800"]]
40
41
42 == 1.2 ​Features ==
43
44
45 * LoRaWAN 1.0.3 Class A
46 * Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865
47 * Ultra-low power consumption
48 * Liquid Level Measurement by Ultrasonic technology
49 * Measure through container, No need to contact Liquid
50 * Valid level range 20mm - 2000mm
51 * Accuracy: ±(5mm+S*0.5%) (S: Measure Value)
52 * Cable Length : 25cm
53 * Support Bluetooth v5.1 and LoRaWAN remote configure
54 * Support wireless OTA update firmware
55 * AT Commands to change parameters
56 * Downlink to change configure
57 * IP66 Waterproof Enclosure
58 * 8500mAh Battery for long term use
59
60 == 1.3 Specification ==
61
62
63 (% style="color:#037691" %)**Common DC Characteristics:**
64
65 * Supply Voltage: built in 8500mAh Li-SOCI2 battery , 2.5v ~~ 3.6v
66 * Operating Temperature: -40 ~~ 85°C
67
68 (% style="color:#037691" %)**LoRa Spec:**
69
70 * Frequency Range,  Band 1 (HF): 862 ~~ 1020 Mhz
71 * Max +22 dBm constant RF output vs.
72 * RX sensitivity: down to -139 dBm.
73 * Excellent blocking immunity
74
75 (% style="color:#037691" %)**Battery:**
76
77 * Li/SOCI2 un-chargeable battery
78 * Capacity: 8500mAh
79 * Self-Discharge: <1% / Year @ 25°C
80 * Max continuously current: 130mA
81 * Max boost current: 2A, 1 second
82
83 (% style="color:#037691" %)**Power Consumption**
84
85 * Sleep Mode: 5uA @ 3.3v
86 * LoRa Transmit Mode: 125mA @ 20dBm, 82mA @ 14dBm
87
88
89 == 1.4 Suitable Container & Liquid ==
90
91
92 * Solid Wall container such as: steel, iron, glass, ceramics, non-foaming plastics etc.
93 * Container shape is regular, and surface is smooth.
94 * Container Thickness:
95 ** Pure metal material.  2~~8mm, best is 3~~5mm
96 ** Pure non metal material: <10 mm
97 * Pure liquid without irregular deposition.(% style="display:none" %)
98
99
100
101 == 1.5 Install DDS20-LB ==
102
103
104 (% style="color:blue" %)**Step 1**(%%):  Choose the installation point.
105
106 DDS20-LB (% style="color:red" %)**MUST**(%%) be installed on the container bottom middle position.
107
108
109 [[image:image-20220615091045-3.png]]
110
111
112
113 (((
114 (% style="color:blue" %)**Step 2**(%%):  Polish the installation point.
115 )))
116
117 (((
118 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.
119 )))
120
121 [[image:image-20220615092010-11.png]]
122
123
124 No polish needed if the container is shine metal surface without paint or non-metal container.
125
126 [[image:image-20220615092044-12.png]]
127
128
129
130 (((
131 (% style="color:blue" %)**Step3:   **(%%)Test the installation point.
132 )))
133
134 (((
135 Power on DDS20-LB, 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.
136 )))
137
138
139 (((
140 It is necessary to put the coupling paste between the sensor and the container, otherwise DDS20-LB won't detect the liquid level.
141 )))
142
143 [[image:1655256160324-178.png||height="151" width="419"]][[image:image-20220615092327-13.png||height="146" width="260"]]
144
145
146 (((
147 After paste the DDS20-LB well, power on DDS20-LB. 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.
148 )))
149
150
151 (((
152 (% style="color:red" %)**LED Status:**
153 )))
154
155 * (((
156 Onboard LED: When power on device, the onboard LED will fast blink 4 times which means detect the sensor well.
157 )))
158
159 * (((
160 (% 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.
161 )))
162 * (((
163 (% style="color:blue" %)**BLUE LED**(% style="color:red" %)** slowly blinking**(%%): Sensor detects Liquid Level, The installation point is good.
164 )))
165
166 (((
167 LDDS20 will enter into low power mode at 30 seconds after system reset or power on, Blue LED will be off after that.
168 )))
169
170
171 (((
172 (% style="color:red" %)**Note 2:**
173 )))
174
175 (((
176 (% style="color:red" %)**Ultrasonic coupling paste** (%%) is subjected in most shipping way. So the default package doesn't include it and user needs to purchase locally.
177 )))
178
179
180 (((
181 (% style="color:blue" %)**Step4:   **(%%)Install use Epoxy ab glue.
182 )))
183
184 (((
185 Prepare Eproxy AB glue.
186 )))
187
188 (((
189 Put Eproxy AB glue in the sensor and press it hard on the container installation point.
190 )))
191
192 (((
193 Reset DDS20-LB and see if the BLUE LED is slowly blinking.
194 )))
195
196 [[image:image-20220615091045-8.png||height="203" width="341"]] [[image:image-20220615091045-9.png||height="200" width="284"]]
197
198
199 (((
200 (% style="color:red" %)**Note 1:**
201 )))
202
203 (((
204 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 (((
209 (% style="color:red" %)**Note 2:**
210 )))
211
212 (((
213 (% style="color:red" %)**Eproxy AB glue**(%%) is subjected in most shipping way. So the default package doesn't include it and user needs to purchase locally.
214 )))
215
216
217 == 1.6 Applications ==
218
219
220 * Smart liquid control solution.
221
222 * Smart liquefied gas solution.
223
224
225 == 1.7 Precautions ==
226
227
228 * 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.
229
230 * 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.
231
232 * 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.(% style="display:none" %)
233
234
235
236 == 1.8 Sleep mode and working mode ==
237
238
239 (% 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.
240
241 (% 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.
242
243
244 == 1.9 Button & LEDs ==
245
246
247 [[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675071855856-879.png]]
248
249
250 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
251 |=(% style="width: 167px;background-color:#D9E2F3;color:#0070C0" %)**Behavior on ACT**|=(% style="width: 117px;background-color:#D9E2F3;color:#0070C0" %)**Function**|=(% style="width: 225px;background-color:#D9E2F3;color:#0070C0" %)**Action**
252 |(% style="width:167px" %)Pressing ACT between 1s < time < 3s|(% style="width:117px" %)Send an uplink|(% style="width:225px" %)(((
253 If sensor is already Joined to LoRaWAN network, sensor will send an uplink packet, (% style="color:blue" %)**blue led** (%%)will blink once.
254 Meanwhile, BLE module will be active and user can connect via BLE to configure device.
255 )))
256 |(% style="width:167px" %)Pressing ACT for more than 3s|(% style="width:117px" %)Active Device|(% style="width:225px" %)(((
257 (% 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 JOIN LoRaWAN network.
258 (% style="color:green" %)**Green led**(%%) will solidly turn on for 5 seconds after joined in network.
259 Once sensor is active, BLE module will be active and user can connect via BLE to configure device, no matter if device join or not join LoRaWAN network.
260 )))
261 |(% 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.
262
263 == 1.10 BLE connection ==
264
265
266 DDS45-LB support BLE remote configure.
267
268
269 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:
270
271 * Press button to send an uplink
272 * Press button to active device.
273 * Device Power on or reset.
274
275 If there is no activity connection on BLE in 60 seconds, sensor will shut down BLE module to enter low power mode.
276
277
278 == 1.11 Pin Definitions ==
279
280 [[image:image-20230523174230-1.png]]
281
282
283 == 1.12 Mechanical ==
284
285
286 [[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675143884058-338.png]]
287
288
289 [[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675143899218-599.png]]
290
291
292 [[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675143909447-639.png]]
293
294
295 (% style="color:blue" %)**Probe Mechanical:**
296
297 [[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"]]
298
299
300 = 2. Configure DDS20-LB to connect to LoRaWAN network =
301
302 == 2.1 How it works ==
303
304
305 The DDS45-LB is configured as (% style="color:#037691" %)**LoRaWAN OTAA Class A**(%%) mode by default. It has OTAA keys to join LoRaWAN network. To connect a local LoRaWAN network, you need to input the OTAA keys in the LoRaWAN IoT server and press the button to activate the DDS45-LB. It will automatically join the network via OTAA and start to send the sensor value. The default uplink interval is 20 minutes.
306
307 (% style="display:none" %) (%%)
308
309 == 2.2 ​Quick guide to connect to LoRaWAN server (OTAA) ==
310
311
312 Following is an example for how to join the [[TTN v3 LoRaWAN Network>>url:https://console.cloud.thethings.network/]]. Below is the network structure; we use the [[LPS8v2>>url:https://www.dragino.com/products/lora-lorawan-gateway/item/228-lps8v2.html]] as a LoRaWAN gateway in this example.
313
314 The LPS8v2 is already set to connected to [[TTN network >>url:https://console.cloud.thethings.network/]], so what we need to now is configure the TTN server.
315
316 [[image:image-20230613140140-4.png||height="453" width="800"]](% style="display:none" %)
317
318
319 (% style="color:blue" %)**Step 1:**(%%) Create a device in TTN with the OTAA keys from DDS45-LB.
320
321 Each DDS45-LB is shipped with a sticker with the default device EUI as below:
322
323 [[image:image-20230426084152-1.png||alt="图片-20230426084152-1.png" height="233" width="502"]]
324
325
326 You can enter this key in the LoRaWAN Server portal. Below is TTN screen shot:
327
328
329 (% style="color:blue" %)**Register the device**
330
331 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50v2-S31-S31B%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20User%20Manual/WebHome/1654935135620-998.png?rev=1.1||alt="1654935135620-998.png"]]
332
333
334 (% style="color:blue" %)**Add APP EUI and DEV EUI**
335
336 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50v2-S31-S31B%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20User%20Manual/WebHome/image-20220611161308-4.png?width=753&height=551&rev=1.1||alt="图片-20220611161308-4.png"]]
337
338
339 (% style="color:blue" %)**Add APP EUI in the application**
340
341
342 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50v2-S31-S31B%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20User%20Manual/WebHome/image-20220611161308-5.png?width=742&height=601&rev=1.1||alt="图片-20220611161308-5.png"]]
343
344
345 (% style="color:blue" %)**Add APP KEY**
346
347 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50v2-S31-S31B%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20User%20Manual/WebHome/image-20220611161308-6.png?width=744&height=485&rev=1.1||alt="图片-20220611161308-6.png"]]
348
349
350 (% style="color:blue" %)**Step 2:**(%%) Activate on DDS45-LB
351
352
353 Press the button for 5 seconds to activate the DDS45-LB.
354
355 (% style="color:green" %)**Green led**(%%) will fast blink 5 times, device will enter (% style="color:blue" %)**OTA mode**(%%) for 3 seconds. And then start to JOIN LoRaWAN network. (% style="color:green" %)**Green led**(%%) will solidly turn on for 5 seconds after joined in network.
356
357 After join success, it will start to upload messages to TTN and you can see the messages in the panel.
358
359
360 == 2.3  ​Uplink Payload ==
361
362
363 (((
364 DDS45-LB will uplink payload via LoRaWAN with below payload format: 
365 )))
366
367 (((
368 Uplink payload includes in total 8 bytes.
369 )))
370
371 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:510px" %)
372 |=(% style="width: 62.5px;background-color:#D9E2F3;color:#0070C0" %)(((
373 **Size(bytes)**
374 )))|=(% style="width: 62.5px;background-color:#D9E2F3;color:#0070C0" %)**2**|=(% style="background-color:#D9E2F3;color:#0070C0" %)**2**|=(% style="background-color:#D9E2F3;color:#0070C0" %)1|=(% style="background-color:#D9E2F3;color:#0070C0" %)2|=(% style="background-color:#D9E2F3;color:#0070C0" %)**1**
375 |(% style="width:62.5px" %)**Value**|(% style="width:62.5px" %)[[BAT>>||anchor="H2.3.1A0BatteryInfo"]]|(((
376 [[Distance>>||anchor="H2.3.2A0Distance"]]
377 (unit: mm)
378 )))|[[Digital Interrupt (Optional)>>||anchor="H2.3.3A0InterruptPin"]]|(((
379 [[Temperature (Optional )>>||anchor="H2.3.4A0DS18B20Temperaturesensor"]]
380 )))|[[Sensor Flag>>||anchor="H2.3.5A0SensorFlag"]]
381
382 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS75%20-%20LoRaWAN%20Distance%20Detection%20Sensor%20User%20Manual/WebHome/1654850511545-399.png?rev=1.1||alt="1654850511545-399.png"]]
383
384
385 === 2.3.1  Battery Info ===
386
387
388 Check the battery voltage for DDS45-LB.
389
390 Ex1: 0x0B45 = 2885mV
391
392 Ex2: 0x0B49 = 2889mV
393
394
395 === 2.3.2  Distance ===
396
397
398 (((
399 Get the distance. Flat object range 30mm - 4500mm.
400 )))
401
402 (((
403 For example, if the data you get from the register is **0x0B 0x05**, the distance between the sensor and the measured object is(% style="color:#4472c4" %)** **
404
405 (% style="color:blue" %)**0B05(H) = 2821 (D) = 2821 mm.**
406 )))
407
408 * If the sensor value is 0x0000, it means system doesn't detect ultrasonic sensor.
409 * If the sensor value lower than 0x001E (30mm), the sensor value will be 0x00.
410
411 === 2.3.3  Interrupt Pin ===
412
413
414 This data field shows if this packet is generated by interrupt or not. [[Click here>>||anchor="H3.3.2SetInterruptMode"]] for the hardware and software set up.
415
416 **Example:**
417
418 0x00: Normal uplink packet.
419
420 0x01: Interrupt Uplink Packet.
421
422
423 === 2.3.4  DS18B20 Temperature sensor ===
424
425
426 This is optional, user can connect external DS18B20 sensor to the +3.3v, 1-wire and GND pin . and this field will report temperature.
427
428 **Example**:
429
430 If payload is: 0105H:  (0105 & FC00 == 0), temp = 0105H /10 = 26.1 degree
431
432 If payload is: FF3FH :  (FF3F & FC00 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.
433
434
435 === 2.3.5  Sensor Flag ===
436
437
438 (((
439 0x01: Detect Ultrasonic Sensor
440 )))
441
442 (((
443 0x00: No Ultrasonic Sensor
444 )))
445
446
447 === 2.3.6  Decode payload in The Things Network ===
448
449
450 While using TTN network, you can add the payload format to decode the payload.
451
452 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS75%20-%20LoRaWAN%20Distance%20Detection%20Sensor%20User%20Manual/WebHome/1654850829385-439.png?rev=1.1||alt="1654850829385-439.png"]]
453
454 The payload decoder function for TTN V3 is here:
455
456 (((
457 DDS45-LB TTN V3 Payload Decoder:  [[ttps:~~/~~/github.com/dragino/dragino-end-node-decoder>>https://github.com/dragino/dragino-end-node-decoder]]
458 )))
459
460
461 == 2.4  Uplink Interval ==
462
463
464 The DDS45-LB by default uplink the sensor data every 20 minutes. User can change this interval by AT Command or LoRaWAN Downlink Command. See this link: [[Change Uplink Interval>>||anchor="H3.3.1SetTransmitIntervalTime"]]
465
466
467 == 2.5  ​Show Data in DataCake IoT Server ==
468
469
470 (((
471 [[DATACAKE>>url:https://datacake.co/]] provides a human friendly interface to show the sensor data, once we have data in TTN, we can use [[DATACAKE>>url:https://datacake.co/]] to connect to TTN and see the data in DATACAKE. Below are the steps:
472 )))
473
474
475 (((
476 (% style="color:blue" %)**Step 1**(%%)**: Be sure that your device is programmed and properly connected to the network at this time.**
477 )))
478
479 (((
480 (% style="color:blue" %)**Step 2**(%%)**: To configure the Application to forward data to DATACAKE you will need to add integration. To add the DATACAKE integration, perform the following steps:**
481 )))
482
483
484 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS75%20-%20LoRaWAN%20Distance%20Detection%20Sensor%20User%20Manual/WebHome/1654592790040-760.png?rev=1.1||alt="1654592790040-760.png"]]
485
486
487 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS75%20-%20LoRaWAN%20Distance%20Detection%20Sensor%20User%20Manual/WebHome/1654592800389-571.png?rev=1.1||alt="1654592800389-571.png"]]
488
489
490 (% style="color:blue" %)**Step 3**(%%)**: Create an account or log in Datacake.**
491
492 (% style="color:blue" %)**Step 4**(%%)**: Search the DDS45-LB and add DevEUI.**
493
494 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS75%20-%20LoRaWAN%20Distance%20Detection%20Sensor%20User%20Manual/WebHome/1654851029373-510.png?rev=1.1||alt="1654851029373-510.png"]]
495
496
497 After added, the sensor data arrive TTN V3, it will also arrive and show in Datacake.
498
499 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS75%20-%20LoRaWAN%20Distance%20Detection%20Sensor%20User%20Manual/WebHome/image-20220610165129-11.png?width=1088&height=595&rev=1.1||alt="image-20220610165129-11.png"]]
500
501
502
503 == 2.6 Datalog Feature ==
504
505
506 Datalog Feature is to ensure IoT Server can get all sampling data from Sensor even if the LoRaWAN network is down. For each sampling, DDS45-LB will store the reading for future retrieving purposes.
507
508
509 === 2.6.1 Ways to get datalog via LoRaWAN ===
510
511
512 Set PNACKMD=1, DDS45-LB will wait for ACK for every uplink, when there is no LoRaWAN network,DDS45-LB will mark these records with non-ack messages and store the sensor data, and it will send all messages (10s interval) after the network recovery.
513
514 * (((
515 a) DDS45-LB will do an ACK check for data records sending to make sure every data arrive server.
516 )))
517 * (((
518 b) DDS45-LB will send data in **CONFIRMED Mode** when PNACKMD=1, but DDS45-LB won't re-transmit the packet if it doesn't get ACK, it will just mark it as a NONE-ACK message. In a future uplink if DDS45-LB gets a ACK, DDS45-LB will consider there is a network connection and resend all NONE-ACK messages.
519 )))
520
521 Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
522
523 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/WebHome/image-20220703111700-2.png?width=1119&height=381&rev=1.1||alt="图片-20220703111700-2.png" height="381" width="1119"]]
524
525
526 === 2.6.2 Unix TimeStamp ===
527
528
529 DDS45-LB uses Unix TimeStamp format based on
530
531 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/WebHome/image-20220523001219-11.png?width=627&height=97&rev=1.1||alt="图片-20220523001219-11.png" height="97" width="627"]]
532
533 User can get this time from link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/]] :
534
535 Below is the converter example
536
537 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/WebHome/image-20220523001219-12.png?width=720&height=298&rev=1.1||alt="图片-20220523001219-12.png" height="298" width="720"]]
538
539
540 So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
541
542
543 === 2.6.3 Set Device Time ===
544
545
546 User need to set (% style="color:blue" %)**SYNCMOD=1**(%%) to enable sync time via MAC command.
547
548 Once DDS45-LB Joined LoRaWAN network, it will send the MAC command (DeviceTimeReq) and the server will reply with (DeviceTimeAns) to send the current time to DDS45-LB. If DDS45-LB fails to get the time from the server, DDS45-LB will use the internal time and wait for next time request (AT+SYNCTDC to set the time request period, default is 10 days).
549
550 (% style="color:red" %)**Note: LoRaWAN Server need to support LoRaWAN v1.0.3(MAC v1.0.3) or higher to support this MAC command feature, Chirpstack,TTN V3 v3 and loriot support but TTN V3 v2 doesn't support. If server doesn't support this command, it will through away uplink packet with this command, so user will lose the packet with time request for TTN V3 v2 if SYNCMOD=1.**
551
552
553 === 2.6.4 Poll sensor value ===
554
555
556 Users can poll sensor values based on timestamps. Below is the downlink command.
557
558 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:425.818px" %)
559 |(% colspan="4" style="background-color:#d9e2f3; color:#0070c0; width:423px" %)**Downlink Command to poll Open/Close status (0x31)**
560 |(% style="width:58px" %)**1byte**|(% style="width:127px" %)**4bytes**|(% style="width:124px" %)**4bytes**|(% style="width:114px" %)**1byte**
561 |(% style="width:58px" %)31|(% style="width:127px" %)Timestamp start|(% style="width:124px" %)Timestamp end|(% style="width:114px" %)Uplink Interval
562
563 (((
564 Timestamp start and Timestamp end-use Unix TimeStamp format as mentioned above. Devices will reply with all data logs during this period, using the uplink interval.
565 )))
566
567 (((
568 For example, downlink command [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/CPL01%20LoRaWAN%20Outdoor%20PulseContact%20%20Sensor%20Manual/WebHome/image-20220518162852-1.png?rev=1.1||alt="image-20220518162852-1.png"]]
569 )))
570
571 (((
572 Is to check 2021/11/12 12:00:00 to 2021/11/12 15:00:00's data
573 )))
574
575 (((
576 Uplink Internal =5s，means DDS45-LB will send one packet every 5s. range 5~~255s.
577 )))
578
579
580 == 2.7 Frequency Plans ==
581
582
583 The DDS45-LB uses OTAA mode and below frequency plans by default. If user want to use it with different frequency plan, please refer the AT command sets.
584
585 [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20Frequency%20Band/>>http://wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20Frequency%20Band/]]
586
587
588 = 3. Configure DDS45-LB =
589
590 == 3.1 Configure Methods ==
591
592
593 DDS45-LB supports below configure method:
594
595 * AT Command via Bluetooth Connection (**Recommended**): [[BLE Configure Instruction>>http://wiki.dragino.com/xwiki/bin/view/Main/BLE%20Bluetooth%20Remote%20Configure/]].
596
597 * 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]].
598
599 * LoRaWAN Downlink.  Instruction for different platforms: See [[IoT LoRaWAN Server>>http://wiki.dragino.com/xwiki/bin/view/Main/]] section.
600
601 == 3.2 General Commands ==
602
603
604 These commands are to configure:
605
606 * General system settings like: uplink interval.
607
608 * LoRaWAN protocol & radio related command.
609
610 They are same for all Dragino Devices which support DLWS-005 LoRaWAN Stack. These commands can be found on the wiki:
611
612 [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20AT%20Commands%20and%20Downlink%20Command/>>http://wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20AT%20Commands%20and%20Downlink%20Command/]]
613
614
615 == 3.3 Commands special design for DDS45-LB ==
616
617
618 These commands only valid for DDS45-LB, as below:
619
620
621 === 3.3.1 Set Transmit Interval Time ===
622
623
624 (((
625 Feature: Change LoRaWAN End Node Transmit Interval.
626 )))
627
628 (((
629 (% style="color:blue" %)**AT Command: AT+TDC**
630 )))
631
632 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
633 |=(% style="width: 156px;background-color:#D9E2F3; color:#0070c0" %)**Command Example**|=(% style="width: 137px;background-color:#D9E2F3; color:#0070c0" %)**Function**|=(% style="background-color:#D9E2F3; color:#0070c0" %)**Response**
634 |(% style="width:156px" %)AT+TDC=?|(% style="width:137px" %)Show current transmit Interval|(((
635 30000
636 OK
637 the interval is 30000ms = 30s
638 )))
639 |(% style="width:156px" %)AT+TDC=60000|(% style="width:137px" %)Set Transmit Interval|(((
640 OK
641 Set transmit interval to 60000ms = 60 seconds
642 )))
643
644 (((
645 (% style="color:blue" %)**Downlink Command: 0x01**
646 )))
647
648 (((
649 Format: Command Code (0x01) followed by 3 bytes time value.
650 )))
651
652 (((
653 If the downlink payload=0100003C, it means set the END Node's Transmit Interval to 0x00003C=60(S), while type code is 01.
654 )))
655
656 * (((
657 Example 1: Downlink Payload: 0100001E  ~/~/ Set Transmit Interval (TDC) = 30 seconds
658 )))
659 * (((
660 Example 2: Downlink Payload: 0100003C  ~/~/ Set Transmit Interval (TDC) = 60 seconds 
661 )))
662
663 === 3.3.2 Set Interrupt Mode ===
664
665
666 Feature, Set Interrupt mode for PA8 of pin.
667
668 When AT+INTMOD=0 is set, PA8 is used as a digital input port.
669
670 (% style="color:blue" %)**AT Command: AT+INTMOD**
671
672 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
673 |=(% style="width: 155px;background-color:#D9E2F3;color:#0070C0" %)**Command Example**|=(% style="width: 197px;background-color:#D9E2F3;color:#0070C0" %)**Function**|=(% style="width: 158px;background-color:#D9E2F3;color:#0070C0" %)**Response**
674 |(% style="width:154px" %)AT+INTMOD=?|(% style="width:196px" %)Show current interrupt mode|(% style="width:157px" %)(((
675 0
676 OK
677 the mode is 0 =Disable Interrupt
678 )))
679 |(% style="width:154px" %)AT+INTMOD=2|(% style="width:196px" %)(((
680 Set Transmit Interval
681 0. (Disable Interrupt),
682 ~1. (Trigger by rising and falling edge)
683 2. (Trigger by falling edge)
684 3. (Trigger by rising edge)
685 )))|(% style="width:157px" %)OK
686
687 (% style="color:blue" %)**Downlink Command: 0x06**
688
689 Format: Command Code (0x06) followed by 3 bytes.
690
691 This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.
692
693 * Example 1: Downlink Payload: 06000000  ~/~/  Turn off interrupt mode
694
695 * Example 2: Downlink Payload: 06000003  ~/~/  Set the interrupt mode to rising edge trigger
696
697 = 4. Battery & Power Consumption =
698
699
700 DDS45-LB use ER26500 + SPC1520 battery pack. See below link for detail information about the battery info and how to replace.
701
702 [[**Battery Info & Power Consumption Analyze**>>http://wiki.dragino.com/xwiki/bin/view/Main/How%20to%20calculate%20the%20battery%20life%20of%20Dragino%20sensors%3F/]] .
703
704
705 = 5. OTA Firmware update =
706
707
708 (% class="wikigeneratedid" %)
709 User can change firmware DDS45-LB to:
710
711 * Change Frequency band/ region.
712
713 * Update with new features.
714
715 * Fix bugs.
716
717 Firmware and changelog can be downloaded from : **[[Firmware download link>>url:https://www.dropbox.com/sh/a5ue0nfrzqy9nz6/AABbvlATosDJKDwBmbirVbMYa?dl=0]]**
718
719 Methods to Update Firmware:
720
721 * (Recommanded way) OTA firmware update via wireless:  [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/Firmware%20OTA%20Update%20for%20Sensors/>>url:http://wiki.dragino.com/xwiki/bin/view/Main/Firmware%20OTA%20Update%20for%20Sensors/]]
722
723 * 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]]**.
724
725 = 6. FAQ =
726
727 == 6.1  What is the frequency plan for DDS45-LB? ==
728
729
730 DDS45-LB use the same frequency as other Dragino products. User can see the detail from this link:  [[Introduction>>doc:Main.End Device Frequency Band.WebHome||anchor="H1.Introduction"]]
731
732
733 == 6.2  Can I use DDS45-LB in condensation environment? ==
734
735
736 DDS45-LB is not suitable to be used in condensation environment. Condensation on the DDS45-LB probe will affect the reading and always got 0.
737
738
739 = 7.  Trouble Shooting =
740
741 == 7.1  Why I can't join TTN V3 in US915 / AU915 bands? ==
742
743
744 It is due to channel mapping. Please see below link:  [[Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
745
746
747 == 7.2  AT Command input doesn't work ==
748
749
750 In the case if user can see the console output but can't type input to the device. Please check if you already include the (% style="color:blue" %)**ENTER**(%%) while sending out the command. Some serial tool doesn't send (% style="color:blue" %)**ENTER**(%%) while press the send key, user need to add ENTER in their string.
751
752
753 == 7.3  Why does the sensor reading show 0 or "No sensor" ==
754
755
756 ~1. The measurement object is very close to the sensor, but in the blind spot of the sensor.
757
758 2. Sensor wiring is disconnected
759
760 3. Not using the correct decoder
761
762
763 == 7.4  Abnormal readings The gap between multiple readings is too large or the gap between the readings and the actual value is too large ==
764
765
766 1) Please check if there is something on the probe affecting its measurement (condensed water, volatile oil, etc.)
767
768 2) Does it change with temperature, temperature will affect its measurement
769
770 3) If abnormal data occurs, you can turn on DEBUG mode, Please use downlink or AT COMMAN to enter DEBUG mode.
771
772 downlink command: (% style="color:blue" %)**F1 01**(%%), AT command: (% style="color:blue" %)**AT+DDEBUG=1**
773
774 4) After entering the debug mode, it will send 20 pieces of data at a time, and you can send its uplink to us for analysis
775
776 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS75%20-%20LoRaWAN%20Distance%20Detection%20Sensor%20User%20Manual/WebHome/image-20230113135125-2.png?width=1057&height=136&rev=1.1||alt="image-20230113135125-2.png"]]
777
778
779 Its original payload will be longer than other data. Even though it is being parsed, it can be seen that it is abnormal data.
780
781 Please send the data to us for check.
782
783
784 = 8. Order Info =
785
786
787 Part Number: (% style="color:blue" %)**DDS45-LB-XXX**
788
789 (% style="color:red" %)**XXX**(%%): **The default frequency band**
790
791 * (% style="color:red" %)**AS923**(%%): LoRaWAN AS923 band
792
793 * (% style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
794
795 * (% style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
796
797 * (% style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
798
799 * (% style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
800
801 * (% style="color:red" %)**US915**(%%): LoRaWAN US915 band
802
803 * (% style="color:red" %)**IN865**(%%): LoRaWAN IN865 band
804
805 * (% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
806
807 = 9. ​Packing Info =
808
809
810 (% style="color:#037691" %)**Package Includes**:
811
812 * DDS45-LB LoRaWAN Distance Detection Sensor x 1
813
814 (% style="color:#037691" %)**Dimension and weight**:
815
816 * Device Size: cm
817
818 * Device Weight: g
819
820 * Package Size / pcs : cm
821
822 * Weight / pcs : g
823
824 = 10. Support =
825
826
827 * 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.
828
829 * 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]].