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Version 79.5 by Xiaoling on 2023/06/13 14:40
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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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18
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 == 1.4 Suitable Container & Liquid ==
89
90
91 * Solid Wall container such as: steel, iron, glass, ceramics, non-foaming plastics etc.
92 * Container shape is regular, and surface is smooth.
93 * Container Thickness:
94 ** Pure metal material.  2~~8mm, best is 3~~5mm
95 ** Pure non metal material: <10 mm
96 * Pure liquid without irregular deposition.(% style="display:none" %)
97
98
99 == 1.5 Install DDS20-LB ==
100
101
102 (% style="color:blue" %)**Step 1**(%%):  Choose the installation point.
103
104 DDS20-LB (% style="color:red" %)**MUST**(%%) be installed on the container bottom middle position.
105
106 [[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"]]
107
108
109 (((
110 (% style="color:blue" %)**Step 2**(%%):  Polish the installation point.
111 )))
112
113 (((
114 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.
115 )))
116
117 [[image:image-20230613143052-5.png]]
118
119
120 No polish needed if the container is shine metal surface without paint or non-metal container.
121
122 [[image:image-20230613143125-6.png]]
123
124
125 (((
126 (% style="color:blue" %)**Step3:   **(%%)Test the installation point.
127 )))
128
129 (((
130 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.
131 )))
132
133 (((
134 It is necessary to put the coupling paste between the sensor and the container, otherwise DDS20-LB won't detect the liquid level.
135 )))
136
137 (((
138 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.
139 )))
140
141
142 (((
143 (% style="color:red" %)**LED Status:**
144 )))
145
146 * (((
147 Onboard LED: When power on device, the onboard LED will fast blink 4 times which means detect the sensor well.
148 )))
149
150 * (((
151 (% 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.
152 )))
153 * (((
154 (% style="color:blue" %)**BLUE LED**(% style="color:red" %)** slowly blinking**(%%): Sensor detects Liquid Level, The installation point is good.
155 )))
156
157 (((
158 LDDS20 will enter into low power mode at 30 seconds after system reset or power on, Blue LED will be off after that.
159 )))
160
161
162 (((
163 (% style="color:red" %)**Note 2:**
164 )))
165
166 (((
167 (% 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.
168 )))
169
170
171 (((
172 (% style="color:blue" %)**Step4:   **(%%)Install use Epoxy ab glue.
173 )))
174
175 (((
176 Prepare Eproxy AB glue.
177 )))
178
179 (((
180 Put Eproxy AB glue in the sensor and press it hard on the container installation point.
181 )))
182
183 (((
184 Reset DDS20-LB and see if the BLUE LED is slowly blinking.
185 )))
186
187 [[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-20220615091045-8.png?width=341&height=203&rev=1.1||alt="image-20220615091045-8.png"]] [[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-20220615091045-9.png?width=284&height=200&rev=1.1||alt="image-20220615091045-9.png"]]
188
189
190 (((
191 (% style="color:red" %)**Note 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.
192 )))
193
194 (((
195 (% style="color:red" %)**Note 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.
196 )))
197
198
199 == 1.6 Applications ==
200
201
202 * Smart liquid control solution.
203
204 * Smart liquefied gas solution.
205
206
207
208 == 1.7 Precautions ==
209
210
211 * 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.
212
213 * 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.
214
215 * 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" %)
216
217
218 == 1.8 Sleep mode and working mode ==
219
220
221 (% 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.
222
223 (% 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.
224
225
226 == 1.9 Button & LEDs ==
227
228
229 [[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675071855856-879.png]]
230
231
232 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
233 |=(% 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**
234 |(% style="width:167px" %)Pressing ACT between 1s < time < 3s|(% style="width:117px" %)Send an uplink|(% style="width:225px" %)(((
235 If sensor is already Joined to LoRaWAN network, sensor will send an uplink packet, (% style="color:blue" %)**blue led** (%%)will blink once.
236 Meanwhile, BLE module will be active and user can connect via BLE to configure device.
237 )))
238 |(% style="width:167px" %)Pressing ACT for more than 3s|(% style="width:117px" %)Active Device|(% style="width:225px" %)(((
239 (% 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.
240 (% style="color:green" %)**Green led**(%%) will solidly turn on for 5 seconds after joined in network.
241 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.
242 )))
243 |(% 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.
244
245 == 1.10 BLE connection ==
246
247
248 DDS20-LB support BLE remote configure.
249
250 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:
251
252 * Press button to send an uplink
253 * Press button to active device.
254 * Device Power on or reset.
255
256 If there is no activity connection on BLE in 60 seconds, sensor will shut down BLE module to enter low power mode.
257
258
259 == 1.11 Pin Definitions ==
260
261 [[image:image-20230523174230-1.png]]
262
263
264 == 1.12 Mechanical ==
265
266
267 [[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675143884058-338.png]]
268
269
270 [[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675143899218-599.png]]
271
272
273 [[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675143909447-639.png]]
274
275
276 (% style="color:blue" %)**Probe Mechanical:**
277
278 [[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"]]
279
280
281 [[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"]]
282
283
284 = 2. Configure DDS20-LB to connect to LoRaWAN network =
285
286 == 2.1 How it works ==
287
288
289 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.
290
291 (% style="display:none" %) (%%)
292
293 == 2.2 ​Quick guide to connect to LoRaWAN server (OTAA) ==
294
295
296 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.
297
298 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.
299
300 [[image:image-20230613140140-4.png||height="453" width="800"]](% style="display:none" %)
301
302
303 (% style="color:blue" %)**Step 1:**(%%) Create a device in TTN with the OTAA keys from DDS45-LB.
304
305 Each DDS45-LB is shipped with a sticker with the default device EUI as below:
306
307 [[image:image-20230426084152-1.png||alt="图片-20230426084152-1.png" height="233" width="502"]]
308
309
310 You can enter this key in the LoRaWAN Server portal. Below is TTN screen shot:
311
312
313 (% style="color:blue" %)**Register the device**
314
315 [[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"]]
316
317
318 (% style="color:blue" %)**Add APP EUI and DEV EUI**
319
320 [[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"]]
321
322
323 (% style="color:blue" %)**Add APP EUI in the application**
324
325
326 [[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"]]
327
328
329 (% style="color:blue" %)**Add APP KEY**
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/image-20220611161308-6.png?width=744&height=485&rev=1.1||alt="图片-20220611161308-6.png"]]
332
333
334 (% style="color:blue" %)**Step 2:**(%%) Activate on DDS45-LB
335
336
337 Press the button for 5 seconds to activate the DDS45-LB.
338
339 (% 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.
340
341 After join success, it will start to upload messages to TTN and you can see the messages in the panel.
342
343
344 == 2.3  ​Uplink Payload ==
345
346
347 (((
348 DDS45-LB will uplink payload via LoRaWAN with below payload format: 
349 )))
350
351 (((
352 Uplink payload includes in total 8 bytes.
353 )))
354
355 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:510px" %)
356 |=(% style="width: 62.5px;background-color:#D9E2F3;color:#0070C0" %)(((
357 **Size(bytes)**
358 )))|=(% 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**
359 |(% style="width:62.5px" %)**Value**|(% style="width:62.5px" %)[[BAT>>||anchor="H2.3.1A0BatteryInfo"]]|(((
360 [[Distance>>||anchor="H2.3.2A0Distance"]]
361 (unit: mm)
362 )))|[[Digital Interrupt (Optional)>>||anchor="H2.3.3A0InterruptPin"]]|(((
363 [[Temperature (Optional )>>||anchor="H2.3.4A0DS18B20Temperaturesensor"]]
364 )))|[[Sensor Flag>>||anchor="H2.3.5A0SensorFlag"]]
365
366 [[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"]]
367
368
369 === 2.3.1  Battery Info ===
370
371
372 Check the battery voltage for DDS45-LB.
373
374 Ex1: 0x0B45 = 2885mV
375
376 Ex2: 0x0B49 = 2889mV
377
378
379 === 2.3.2  Distance ===
380
381
382 (((
383 Get the distance. Flat object range 30mm - 4500mm.
384 )))
385
386 (((
387 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" %)** **
388
389 (% style="color:blue" %)**0B05(H) = 2821 (D) = 2821 mm.**
390 )))
391
392 * If the sensor value is 0x0000, it means system doesn't detect ultrasonic sensor.
393 * If the sensor value lower than 0x001E (30mm), the sensor value will be 0x00.
394
395 === 2.3.3  Interrupt Pin ===
396
397
398 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.
399
400 **Example:**
401
402 0x00: Normal uplink packet.
403
404 0x01: Interrupt Uplink Packet.
405
406
407 === 2.3.4  DS18B20 Temperature sensor ===
408
409
410 This is optional, user can connect external DS18B20 sensor to the +3.3v, 1-wire and GND pin . and this field will report temperature.
411
412 **Example**:
413
414 If payload is: 0105H:  (0105 & FC00 == 0), temp = 0105H /10 = 26.1 degree
415
416 If payload is: FF3FH :  (FF3F & FC00 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.
417
418
419 === 2.3.5  Sensor Flag ===
420
421
422 (((
423 0x01: Detect Ultrasonic Sensor
424 )))
425
426 (((
427 0x00: No Ultrasonic Sensor
428 )))
429
430
431 === 2.3.6  Decode payload in The Things Network ===
432
433
434 While using TTN network, you can add the payload format to decode the payload.
435
436 [[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"]]
437
438 The payload decoder function for TTN V3 is here:
439
440 (((
441 DDS45-LB TTN V3 Payload Decoder:  [[ttps:~~/~~/github.com/dragino/dragino-end-node-decoder>>https://github.com/dragino/dragino-end-node-decoder]]
442 )))
443
444
445 == 2.4  Uplink Interval ==
446
447
448 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"]]
449
450
451 == 2.5  ​Show Data in DataCake IoT Server ==
452
453
454 (((
455 [[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:
456 )))
457
458
459 (((
460 (% style="color:blue" %)**Step 1**(%%)**: Be sure that your device is programmed and properly connected to the network at this time.**
461 )))
462
463 (((
464 (% 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:**
465 )))
466
467
468 [[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"]]
469
470
471 [[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"]]
472
473
474 (% style="color:blue" %)**Step 3**(%%)**: Create an account or log in Datacake.**
475
476 (% style="color:blue" %)**Step 4**(%%)**: Search the DDS45-LB and add DevEUI.**
477
478 [[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"]]
479
480
481 After added, the sensor data arrive TTN V3, it will also arrive and show in Datacake.
482
483 [[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"]]
484
485
486
487 == 2.6 Datalog Feature ==
488
489
490 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.
491
492
493 === 2.6.1 Ways to get datalog via LoRaWAN ===
494
495
496 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.
497
498 * (((
499 a) DDS45-LB will do an ACK check for data records sending to make sure every data arrive server.
500 )))
501 * (((
502 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.
503 )))
504
505 Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
506
507 [[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"]]
508
509
510 === 2.6.2 Unix TimeStamp ===
511
512
513 DDS45-LB uses Unix TimeStamp format based on
514
515 [[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"]]
516
517 User can get this time from link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/]] :
518
519 Below is the converter example
520
521 [[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"]]
522
523
524 So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
525
526
527 === 2.6.3 Set Device Time ===
528
529
530 User need to set (% style="color:blue" %)**SYNCMOD=1**(%%) to enable sync time via MAC command.
531
532 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).
533
534 (% 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.**
535
536
537 === 2.6.4 Poll sensor value ===
538
539
540 Users can poll sensor values based on timestamps. Below is the downlink command.
541
542 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:425.818px" %)
543 |(% colspan="4" style="background-color:#d9e2f3; color:#0070c0; width:423px" %)**Downlink Command to poll Open/Close status (0x31)**
544 |(% style="width:58px" %)**1byte**|(% style="width:127px" %)**4bytes**|(% style="width:124px" %)**4bytes**|(% style="width:114px" %)**1byte**
545 |(% style="width:58px" %)31|(% style="width:127px" %)Timestamp start|(% style="width:124px" %)Timestamp end|(% style="width:114px" %)Uplink Interval
546
547 (((
548 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.
549 )))
550
551 (((
552 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"]]
553 )))
554
555 (((
556 Is to check 2021/11/12 12:00:00 to 2021/11/12 15:00:00's data
557 )))
558
559 (((
560 Uplink Internal =5s，means DDS45-LB will send one packet every 5s. range 5~~255s.
561 )))
562
563
564 == 2.7 Frequency Plans ==
565
566
567 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.
568
569 [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20Frequency%20Band/>>http://wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20Frequency%20Band/]]
570
571
572 = 3. Configure DDS45-LB =
573
574 == 3.1 Configure Methods ==
575
576
577 DDS45-LB supports below configure method:
578
579 * AT Command via Bluetooth Connection (**Recommended**): [[BLE Configure Instruction>>http://wiki.dragino.com/xwiki/bin/view/Main/BLE%20Bluetooth%20Remote%20Configure/]].
580
581 * 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]].
582
583 * LoRaWAN Downlink.  Instruction for different platforms: See [[IoT LoRaWAN Server>>http://wiki.dragino.com/xwiki/bin/view/Main/]] section.
584
585 == 3.2 General Commands ==
586
587
588 These commands are to configure:
589
590 * General system settings like: uplink interval.
591
592 * LoRaWAN protocol & radio related command.
593
594 They are same for all Dragino Devices which support DLWS-005 LoRaWAN Stack. These commands can be found on the wiki:
595
596 [[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/]]
597
598
599 == 3.3 Commands special design for DDS45-LB ==
600
601
602 These commands only valid for DDS45-LB, as below:
603
604
605 === 3.3.1 Set Transmit Interval Time ===
606
607
608 (((
609 Feature: Change LoRaWAN End Node Transmit Interval.
610 )))
611
612 (((
613 (% style="color:blue" %)**AT Command: AT+TDC**
614 )))
615
616 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
617 |=(% 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**
618 |(% style="width:156px" %)AT+TDC=?|(% style="width:137px" %)Show current transmit Interval|(((
619 30000
620 OK
621 the interval is 30000ms = 30s
622 )))
623 |(% style="width:156px" %)AT+TDC=60000|(% style="width:137px" %)Set Transmit Interval|(((
624 OK
625 Set transmit interval to 60000ms = 60 seconds
626 )))
627
628 (((
629 (% style="color:blue" %)**Downlink Command: 0x01**
630 )))
631
632 (((
633 Format: Command Code (0x01) followed by 3 bytes time value.
634 )))
635
636 (((
637 If the downlink payload=0100003C, it means set the END Node's Transmit Interval to 0x00003C=60(S), while type code is 01.
638 )))
639
640 * (((
641 Example 1: Downlink Payload: 0100001E  ~/~/ Set Transmit Interval (TDC) = 30 seconds
642 )))
643 * (((
644 Example 2: Downlink Payload: 0100003C  ~/~/ Set Transmit Interval (TDC) = 60 seconds 
645 )))
646
647 === 3.3.2 Set Interrupt Mode ===
648
649
650 Feature, Set Interrupt mode for PA8 of pin.
651
652 When AT+INTMOD=0 is set, PA8 is used as a digital input port.
653
654 (% style="color:blue" %)**AT Command: AT+INTMOD**
655
656 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
657 |=(% 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**
658 |(% style="width:154px" %)AT+INTMOD=?|(% style="width:196px" %)Show current interrupt mode|(% style="width:157px" %)(((
659 0
660 OK
661 the mode is 0 =Disable Interrupt
662 )))
663 |(% style="width:154px" %)AT+INTMOD=2|(% style="width:196px" %)(((
664 Set Transmit Interval
665 0. (Disable Interrupt),
666 ~1. (Trigger by rising and falling edge)
667 2. (Trigger by falling edge)
668 3. (Trigger by rising edge)
669 )))|(% style="width:157px" %)OK
670
671 (% style="color:blue" %)**Downlink Command: 0x06**
672
673 Format: Command Code (0x06) followed by 3 bytes.
674
675 This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.
676
677 * Example 1: Downlink Payload: 06000000  ~/~/  Turn off interrupt mode
678
679 * Example 2: Downlink Payload: 06000003  ~/~/  Set the interrupt mode to rising edge trigger
680
681 = 4. Battery & Power Consumption =
682
683
684 DDS45-LB use ER26500 + SPC1520 battery pack. See below link for detail information about the battery info and how to replace.
685
686 [[**Battery Info & Power Consumption Analyze**>>http://wiki.dragino.com/xwiki/bin/view/Main/How%20to%20calculate%20the%20battery%20life%20of%20Dragino%20sensors%3F/]] .
687
688
689 = 5. OTA Firmware update =
690
691
692 (% class="wikigeneratedid" %)
693 User can change firmware DDS45-LB to:
694
695 * Change Frequency band/ region.
696
697 * Update with new features.
698
699 * Fix bugs.
700
701 Firmware and changelog can be downloaded from : **[[Firmware download link>>url:https://www.dropbox.com/sh/a5ue0nfrzqy9nz6/AABbvlATosDJKDwBmbirVbMYa?dl=0]]**
702
703 Methods to Update Firmware:
704
705 * (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/]]
706
707 * 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]]**.
708
709 = 6. FAQ =
710
711 == 6.1  What is the frequency plan for DDS45-LB? ==
712
713
714 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"]]
715
716
717 == 6.2  Can I use DDS45-LB in condensation environment? ==
718
719
720 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.
721
722
723 = 7.  Trouble Shooting =
724
725 == 7.1  Why I can't join TTN V3 in US915 / AU915 bands? ==
726
727
728 It is due to channel mapping. Please see below link:  [[Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
729
730
731 == 7.2  AT Command input doesn't work ==
732
733
734 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.
735
736
737 == 7.3  Why does the sensor reading show 0 or "No sensor" ==
738
739
740 ~1. The measurement object is very close to the sensor, but in the blind spot of the sensor.
741
742 2. Sensor wiring is disconnected
743
744 3. Not using the correct decoder
745
746
747 == 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 ==
748
749
750 1) Please check if there is something on the probe affecting its measurement (condensed water, volatile oil, etc.)
751
752 2) Does it change with temperature, temperature will affect its measurement
753
754 3) If abnormal data occurs, you can turn on DEBUG mode, Please use downlink or AT COMMAN to enter DEBUG mode.
755
756 downlink command: (% style="color:blue" %)**F1 01**(%%), AT command: (% style="color:blue" %)**AT+DDEBUG=1**
757
758 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
759
760 [[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"]]
761
762
763 Its original payload will be longer than other data. Even though it is being parsed, it can be seen that it is abnormal data.
764
765 Please send the data to us for check.
766
767
768 = 8. Order Info =
769
770
771 Part Number: (% style="color:blue" %)**DDS45-LB-XXX**
772
773 (% style="color:red" %)**XXX**(%%): **The default frequency band**
774
775 * (% style="color:red" %)**AS923**(%%): LoRaWAN AS923 band
776
777 * (% style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
778
779 * (% style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
780
781 * (% style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
782
783 * (% style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
784
785 * (% style="color:red" %)**US915**(%%): LoRaWAN US915 band
786
787 * (% style="color:red" %)**IN865**(%%): LoRaWAN IN865 band
788
789 * (% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
790
791 = 9. ​Packing Info =
792
793
794 (% style="color:#037691" %)**Package Includes**:
795
796 * DDS45-LB LoRaWAN Distance Detection Sensor x 1
797
798 (% style="color:#037691" %)**Dimension and weight**:
799
800 * Device Size: cm
801
802 * Device Weight: g
803
804 * Package Size / pcs : cm
805
806 * Weight / pcs : g
807
808 = 10. Support =
809
810
811 * 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.
812
813 * 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]].