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Version 77.2 by Xiaoling on 2023/06/13 14:01
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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 * Distance Detection by Ultrasonic technology
49 * Flat object range 30mm - 4500mm
50 * Accuracy: ±(1cm+S*0.3%) (S: Distance)
51 * Measure Angle: 60°
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 Rated environmental conditions ==
89
90
91 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:500px" %)
92 |(% style="background-color:#d9e2f3; color:#0070c0; width:163px" %)**Item**|(% style="background-color:#d9e2f3; color:#0070c0; width:90px" %)(((
93 **Minimum value**
94 )))|(% style="background-color:#d9e2f3; color:#0070c0; width:70px" %)(((
95 **Typical value**
96 )))|(% style="background-color:#d9e2f3; color:#0070c0; width:87px" %)(((
97 **Maximum value**
98 )))|(% style="background-color:#d9e2f3; color:#0070c0; width:40px" %)**Unit**|(% style="background-color:#d9e2f3; color:#0070c0; width:50px" %)**Remarks**
99 |(% style="width:174px" %)Storage temperature|(% style="width:86px" %)-25|(% style="width:66px" %)25|(% style="width:90px" %)80|(% style="width:48px" %)℃|(% style="width:203px" %)
100 |(% style="width:174px" %)Storage humidity|(% style="width:86px" %) |(% style="width:66px" %)65%|(% style="width:90px" %)90%|(% style="width:48px" %)RH|(% style="width:203px" %)(1)
101 |(% style="width:174px" %)Operating temperature|(% style="width:86px" %)-15|(% style="width:66px" %)25|(% style="width:90px" %)60|(% style="width:48px" %)℃|(% style="width:203px" %)
102 |(% style="width:174px" %)Working humidity|(% style="width:86px" %)(((
103
104
105
106 )))|(% style="width:66px" %)65%|(% style="width:90px" %)80%|(% style="width:48px" %)RH|(% style="width:203px" %)(1)
107
108 (((
109 (% style="color:red" %)**Remarks: (1) a. When the ambient temperature is 0-39 ℃, the maximum humidity is 90% (non-condensing);       **
110
111 (% style="color:red" %)** b. When the ambient temperature is 40-50 ℃, the highest humidity is the highest humidity in the natural world at the current temperature (no condensation)**
112
113
114 )))
115
116 == 1.5 Effective measurement range Reference beam pattern ==
117
118
119 (% style="color:blue" %)**1. The tested object is a white cylindrical tube made of PVC, with a height of 100cm and a diameter of 7.5cm.**
120
121 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS75%20-%20LoRaWAN%20Distance%20Detection%20Sensor%20User%20Manual/WebHome/1654852253176-749.png?rev=1.1||alt="1654852253176-749.png"]]
122
123
124 (% style="color:blue" %)**2. The object to be tested is a "corrugated cardboard box" perpendicular to the central axis of 0 °, and the length * width is 60cm * 50cm.**
125
126 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS75%20-%20LoRaWAN%20Distance%20Detection%20Sensor%20User%20Manual/WebHome/1654852175653-550.png?rev=1.1||alt="1654852175653-550.png"]]
127
128
129 == 1.6 Applications ==
130
131
132 * Horizontal distance measurement
133 * Liquid level measurement
134 * Parking management system
135 * Object proximity and presence detection
136 * Intelligent trash can management system
137 * Robot obstacle avoidance
138 * Automatic control
139 * Sewer
140 * Bottom water level monitoring
141
142 == 1.7 Sleep mode and working mode ==
143
144
145 (% 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.
146
147 (% 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.
148
149
150 == 1.8 Button & LEDs ==
151
152
153 [[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675071855856-879.png]]
154
155
156 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
157 |=(% 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**
158 |(% style="width:167px" %)Pressing ACT between 1s < time < 3s|(% style="width:117px" %)Send an uplink|(% style="width:225px" %)(((
159 If sensor is already Joined to LoRaWAN network, sensor will send an uplink packet, (% style="color:blue" %)**blue led** (%%)will blink once.
160 Meanwhile, BLE module will be active and user can connect via BLE to configure device.
161 )))
162 |(% style="width:167px" %)Pressing ACT for more than 3s|(% style="width:117px" %)Active Device|(% style="width:225px" %)(((
163 (% 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.
164 (% style="color:green" %)**Green led**(%%) will solidly turn on for 5 seconds after joined in network.
165 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.
166 )))
167 |(% 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.
168
169 == 1.9 BLE connection ==
170
171
172 DDS45-LB support BLE remote configure.
173
174
175 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:
176
177 * Press button to send an uplink
178 * Press button to active device.
179 * Device Power on or reset.
180
181 If there is no activity connection on BLE in 60 seconds, sensor will shut down BLE module to enter low power mode.
182
183
184 == 1.10 Pin Definitions ==
185
186 [[image:image-20230523174230-1.png]]
187
188
189 == 1.11 Mechanical ==
190
191
192 [[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675143884058-338.png]]
193
194
195 [[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675143899218-599.png]]
196
197
198 [[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675143909447-639.png]]
199
200
201 (% style="color:blue" %)**Probe Mechanical:**
202
203 [[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"]]
204
205
206 = 2. Configure DDS45-LB to connect to LoRaWAN network =
207
208 == 2.1 How it works ==
209
210
211 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.
212
213 (% style="display:none" %) (%%)
214
215 == 2.2 ​Quick guide to connect to LoRaWAN server (OTAA) ==
216
217
218 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.
219
220 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.
221
222 [[image:image-20230613140140-4.png||height="453" width="800"]](% style="display:none" %)
223
224
225 (% style="color:blue" %)**Step 1:**(%%) Create a device in TTN with the OTAA keys from DDS45-LB.
226
227 Each DDS45-LB is shipped with a sticker with the default device EUI as below:
228
229 [[image:image-20230426084152-1.png||alt="图片-20230426084152-1.png" height="233" width="502"]]
230
231
232 You can enter this key in the LoRaWAN Server portal. Below is TTN screen shot:
233
234
235 (% style="color:blue" %)**Register the device**
236
237 [[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"]]
238
239
240 (% style="color:blue" %)**Add APP EUI and DEV EUI**
241
242 [[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"]]
243
244
245 (% style="color:blue" %)**Add APP EUI in the application**
246
247
248 [[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"]]
249
250
251 (% style="color:blue" %)**Add APP KEY**
252
253 [[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"]]
254
255
256 (% style="color:blue" %)**Step 2:**(%%) Activate on DDS45-LB
257
258
259 Press the button for 5 seconds to activate the DDS45-LB.
260
261 (% 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.
262
263 After join success, it will start to upload messages to TTN and you can see the messages in the panel.
264
265
266 == 2.3  ​Uplink Payload ==
267
268
269 (((
270 DDS45-LB will uplink payload via LoRaWAN with below payload format: 
271 )))
272
273 (((
274 Uplink payload includes in total 8 bytes.
275 )))
276
277 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:510px" %)
278 |=(% style="width: 62.5px;background-color:#D9E2F3;color:#0070C0" %)(((
279 **Size(bytes)**
280 )))|=(% 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**
281 |(% style="width:62.5px" %)**Value**|(% style="width:62.5px" %)[[BAT>>||anchor="H2.3.1A0BatteryInfo"]]|(((
282 [[Distance>>||anchor="H2.3.2A0Distance"]]
283 (unit: mm)
284 )))|[[Digital Interrupt (Optional)>>||anchor="H2.3.3A0InterruptPin"]]|(((
285 [[Temperature (Optional )>>||anchor="H2.3.4A0DS18B20Temperaturesensor"]]
286 )))|[[Sensor Flag>>||anchor="H2.3.5A0SensorFlag"]]
287
288 [[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"]]
289
290
291 === 2.3.1  Battery Info ===
292
293
294 Check the battery voltage for DDS45-LB.
295
296 Ex1: 0x0B45 = 2885mV
297
298 Ex2: 0x0B49 = 2889mV
299
300
301 === 2.3.2  Distance ===
302
303
304 (((
305 Get the distance. Flat object range 30mm - 4500mm.
306 )))
307
308 (((
309 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" %)** **
310
311 (% style="color:blue" %)**0B05(H) = 2821 (D) = 2821 mm.**
312 )))
313
314 * If the sensor value is 0x0000, it means system doesn't detect ultrasonic sensor.
315 * If the sensor value lower than 0x001E (30mm), the sensor value will be 0x00.
316
317 === 2.3.3  Interrupt Pin ===
318
319
320 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.
321
322 **Example:**
323
324 0x00: Normal uplink packet.
325
326 0x01: Interrupt Uplink Packet.
327
328
329 === 2.3.4  DS18B20 Temperature sensor ===
330
331
332 This is optional, user can connect external DS18B20 sensor to the +3.3v, 1-wire and GND pin . and this field will report temperature.
333
334 **Example**:
335
336 If payload is: 0105H:  (0105 & FC00 == 0), temp = 0105H /10 = 26.1 degree
337
338 If payload is: FF3FH :  (FF3F & FC00 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.
339
340
341 === 2.3.5  Sensor Flag ===
342
343
344 (((
345 0x01: Detect Ultrasonic Sensor
346 )))
347
348 (((
349 0x00: No Ultrasonic Sensor
350 )))
351
352
353 === 2.3.6  Decode payload in The Things Network ===
354
355
356 While using TTN network, you can add the payload format to decode the payload.
357
358 [[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"]]
359
360 The payload decoder function for TTN V3 is here:
361
362 (((
363 DDS45-LB TTN V3 Payload Decoder:  [[ttps:~~/~~/github.com/dragino/dragino-end-node-decoder>>https://github.com/dragino/dragino-end-node-decoder]]
364 )))
365
366
367 == 2.4  Uplink Interval ==
368
369
370 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"]]
371
372
373 == 2.5  ​Show Data in DataCake IoT Server ==
374
375
376 (((
377 [[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:
378 )))
379
380
381 (((
382 (% style="color:blue" %)**Step 1**(%%)**: Be sure that your device is programmed and properly connected to the network at this time.**
383 )))
384
385 (((
386 (% 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:**
387 )))
388
389
390 [[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"]]
391
392
393 [[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"]]
394
395
396 (% style="color:blue" %)**Step 3**(%%)**: Create an account or log in Datacake.**
397
398 (% style="color:blue" %)**Step 4**(%%)**: Search the DDS45-LB and add DevEUI.**
399
400 [[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"]]
401
402
403 After added, the sensor data arrive TTN V3, it will also arrive and show in Datacake.
404
405 [[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"]]
406
407
408
409 == 2.6 Datalog Feature ==
410
411
412 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.
413
414
415 === 2.6.1 Ways to get datalog via LoRaWAN ===
416
417
418 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.
419
420 * (((
421 a) DDS45-LB will do an ACK check for data records sending to make sure every data arrive server.
422 )))
423 * (((
424 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.
425 )))
426
427 Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
428
429 [[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"]]
430
431
432 === 2.6.2 Unix TimeStamp ===
433
434
435 DDS45-LB uses Unix TimeStamp format based on
436
437 [[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"]]
438
439 User can get this time from link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/]] :
440
441 Below is the converter example
442
443 [[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"]]
444
445
446 So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
447
448
449 === 2.6.3 Set Device Time ===
450
451
452 User need to set (% style="color:blue" %)**SYNCMOD=1**(%%) to enable sync time via MAC command.
453
454 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).
455
456 (% 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.**
457
458
459 === 2.6.4 Poll sensor value ===
460
461
462 Users can poll sensor values based on timestamps. Below is the downlink command.
463
464 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:425.818px" %)
465 |(% colspan="4" style="background-color:#d9e2f3; color:#0070c0; width:423px" %)**Downlink Command to poll Open/Close status (0x31)**
466 |(% style="width:58px" %)**1byte**|(% style="width:127px" %)**4bytes**|(% style="width:124px" %)**4bytes**|(% style="width:114px" %)**1byte**
467 |(% style="width:58px" %)31|(% style="width:127px" %)Timestamp start|(% style="width:124px" %)Timestamp end|(% style="width:114px" %)Uplink Interval
468
469 (((
470 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.
471 )))
472
473 (((
474 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"]]
475 )))
476
477 (((
478 Is to check 2021/11/12 12:00:00 to 2021/11/12 15:00:00's data
479 )))
480
481 (((
482 Uplink Internal =5s，means DDS45-LB will send one packet every 5s. range 5~~255s.
483 )))
484
485
486 == 2.7 Frequency Plans ==
487
488
489 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.
490
491 [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20Frequency%20Band/>>http://wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20Frequency%20Band/]]
492
493
494 = 3. Configure DDS45-LB =
495
496 == 3.1 Configure Methods ==
497
498
499 DDS45-LB supports below configure method:
500
501 * AT Command via Bluetooth Connection (**Recommended**): [[BLE Configure Instruction>>http://wiki.dragino.com/xwiki/bin/view/Main/BLE%20Bluetooth%20Remote%20Configure/]].
502
503 * 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]].
504
505 * LoRaWAN Downlink.  Instruction for different platforms: See [[IoT LoRaWAN Server>>http://wiki.dragino.com/xwiki/bin/view/Main/]] section.
506
507 == 3.2 General Commands ==
508
509
510 These commands are to configure:
511
512 * General system settings like: uplink interval.
513
514 * LoRaWAN protocol & radio related command.
515
516 They are same for all Dragino Devices which support DLWS-005 LoRaWAN Stack. These commands can be found on the wiki:
517
518 [[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/]]
519
520
521 == 3.3 Commands special design for DDS45-LB ==
522
523
524 These commands only valid for DDS45-LB, as below:
525
526
527 === 3.3.1 Set Transmit Interval Time ===
528
529
530 (((
531 Feature: Change LoRaWAN End Node Transmit Interval.
532 )))
533
534 (((
535 (% style="color:blue" %)**AT Command: AT+TDC**
536 )))
537
538 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
539 |=(% 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**
540 |(% style="width:156px" %)AT+TDC=?|(% style="width:137px" %)Show current transmit Interval|(((
541 30000
542 OK
543 the interval is 30000ms = 30s
544 )))
545 |(% style="width:156px" %)AT+TDC=60000|(% style="width:137px" %)Set Transmit Interval|(((
546 OK
547 Set transmit interval to 60000ms = 60 seconds
548 )))
549
550 (((
551 (% style="color:blue" %)**Downlink Command: 0x01**
552 )))
553
554 (((
555 Format: Command Code (0x01) followed by 3 bytes time value.
556 )))
557
558 (((
559 If the downlink payload=0100003C, it means set the END Node's Transmit Interval to 0x00003C=60(S), while type code is 01.
560 )))
561
562 * (((
563 Example 1: Downlink Payload: 0100001E  ~/~/ Set Transmit Interval (TDC) = 30 seconds
564 )))
565 * (((
566 Example 2: Downlink Payload: 0100003C  ~/~/ Set Transmit Interval (TDC) = 60 seconds 
567 )))
568
569 === 3.3.2 Set Interrupt Mode ===
570
571
572 Feature, Set Interrupt mode for PA8 of pin.
573
574 When AT+INTMOD=0 is set, PA8 is used as a digital input port.
575
576 (% style="color:blue" %)**AT Command: AT+INTMOD**
577
578 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
579 |=(% 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**
580 |(% style="width:154px" %)AT+INTMOD=?|(% style="width:196px" %)Show current interrupt mode|(% style="width:157px" %)(((
581 0
582 OK
583 the mode is 0 =Disable Interrupt
584 )))
585 |(% style="width:154px" %)AT+INTMOD=2|(% style="width:196px" %)(((
586 Set Transmit Interval
587 0. (Disable Interrupt),
588 ~1. (Trigger by rising and falling edge)
589 2. (Trigger by falling edge)
590 3. (Trigger by rising edge)
591 )))|(% style="width:157px" %)OK
592
593 (% style="color:blue" %)**Downlink Command: 0x06**
594
595 Format: Command Code (0x06) followed by 3 bytes.
596
597 This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.
598
599 * Example 1: Downlink Payload: 06000000  ~/~/  Turn off interrupt mode
600
601 * Example 2: Downlink Payload: 06000003  ~/~/  Set the interrupt mode to rising edge trigger
602
603 = 4. Battery & Power Consumption =
604
605
606 DDS45-LB use ER26500 + SPC1520 battery pack. See below link for detail information about the battery info and how to replace.
607
608 [[**Battery Info & Power Consumption Analyze**>>http://wiki.dragino.com/xwiki/bin/view/Main/How%20to%20calculate%20the%20battery%20life%20of%20Dragino%20sensors%3F/]] .
609
610
611 = 5. OTA Firmware update =
612
613
614 (% class="wikigeneratedid" %)
615 User can change firmware DDS45-LB to:
616
617 * Change Frequency band/ region.
618
619 * Update with new features.
620
621 * Fix bugs.
622
623 Firmware and changelog can be downloaded from : **[[Firmware download link>>url:https://www.dropbox.com/sh/a5ue0nfrzqy9nz6/AABbvlATosDJKDwBmbirVbMYa?dl=0]]**
624
625 Methods to Update Firmware:
626
627 * (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/]]
628
629 * 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]]**.
630
631 = 6. FAQ =
632
633 == 6.1  What is the frequency plan for DDS45-LB? ==
634
635
636 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"]]
637
638
639 == 6.2  Can I use DDS45-LB in condensation environment? ==
640
641
642 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.
643
644
645 = 7.  Trouble Shooting =
646
647 == 7.1  Why I can't join TTN V3 in US915 / AU915 bands? ==
648
649
650 It is due to channel mapping. Please see below link:  [[Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
651
652
653 == 7.2  AT Command input doesn't work ==
654
655
656 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.
657
658
659 == 7.3  Why does the sensor reading show 0 or "No sensor" ==
660
661
662 ~1. The measurement object is very close to the sensor, but in the blind spot of the sensor.
663
664 2. Sensor wiring is disconnected
665
666 3. Not using the correct decoder
667
668
669 == 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 ==
670
671
672 1) Please check if there is something on the probe affecting its measurement (condensed water, volatile oil, etc.)
673
674 2) Does it change with temperature, temperature will affect its measurement
675
676 3) If abnormal data occurs, you can turn on DEBUG mode, Please use downlink or AT COMMAN to enter DEBUG mode.
677
678 downlink command: (% style="color:blue" %)**F1 01**(%%), AT command: (% style="color:blue" %)**AT+DDEBUG=1**
679
680 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
681
682 [[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"]]
683
684
685 Its original payload will be longer than other data. Even though it is being parsed, it can be seen that it is abnormal data.
686
687 Please send the data to us for check.
688
689
690 = 8. Order Info =
691
692
693 Part Number: (% style="color:blue" %)**DDS45-LB-XXX**
694
695 (% style="color:red" %)**XXX**(%%): **The default frequency band**
696
697 * (% style="color:red" %)**AS923**(%%): LoRaWAN AS923 band
698
699 * (% style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
700
701 * (% style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
702
703 * (% style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
704
705 * (% style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
706
707 * (% style="color:red" %)**US915**(%%): LoRaWAN US915 band
708
709 * (% style="color:red" %)**IN865**(%%): LoRaWAN IN865 band
710
711 * (% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
712
713 = 9. ​Packing Info =
714
715
716 (% style="color:#037691" %)**Package Includes**:
717
718 * DDS45-LB LoRaWAN Distance Detection Sensor x 1
719
720 (% style="color:#037691" %)**Dimension and weight**:
721
722 * Device Size: cm
723
724 * Device Weight: g
725
726 * Package Size / pcs : cm
727
728 * Weight / pcs : g
729
730 = 10. Support =
731
732
733 * 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.
734
735 * 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]].