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Version 70.22 by Xiaoling on 2023/06/13 09:08
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1 (% style="text-align:center" %)
2 [[image:image-20230612170349-1.png||height="656" width="656"]]
3
4
5
6
7 **Table of Contents：**
8
9 {{toc/}}
10
11
12
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14
15
16 = 1. Introduction =
17
18 == 1.1 What is LoRaWAN Distance Detection Sensor ==
19
20
21 The Dragino DDS75-LB is a (% style="color:blue" %)** LoRaWAN Distance Detection Sensor**(%%) for Internet of Things solution. It is used to measure the distance between the sensor and a flat object. The distance detection sensor is a module that uses (% style="color:blue" %)** ultrasonic sensing technology**(%%) for (% style="color:blue" %)**distance measurement**(%%), and (% style="color:blue" %)** temperature compensation**(%%) is performed internally to improve the reliability of data. The DDS75-LB can be applied to scenarios such as horizontal distance measurement, liquid level measurement, parking management system, object proximity and presence detection, intelligent trash can management system, robot obstacle avoidance, automatic control, sewer, bottom water level monitoring, etc.
22
23 It detects the distance(% style="color:blue" %)**  between the measured object and the sensor**(%%), and uploads the value via wireless to LoRaWAN IoT Server.
24
25 The LoRa wireless technology used in DDS75-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.
26
27 DDS75-LB (% style="color:blue" %)**supports BLE configure**(%%) and (% style="color:blue" %)**wireless OTA update**(%%) which make user easy to use.
28
29 DDS75-LB is powered by (% style="color:blue" %)**8500mAh Li-SOCI2 battery**(%%), it is designed for long term use up to 5 years.
30
31 Each DDS75-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.
32
33 [[image:image-20230612170943-2.png||height="525" width="912"]]
34
35
36 == 1.2 ​Features ==
37
38
39 * LoRaWAN 1.0.3 Class A
40 * Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865
41 * Ultra-low power consumption
42 * Distance Detection by Ultrasonic technology
43 * Flat object range 280mm - 7500mm
44 * Accuracy: ±(1cm+S*0.3%) (S: Distance)
45 * Cable Length : 25cm
46 * Support Bluetooth v5.1 and LoRaWAN remote configure
47 * Support wireless OTA update firmware
48 * AT Commands to change parameters
49 * Downlink to change configure
50 * IP66 Waterproof Enclosure
51 * 8500mAh Battery for long term use
52
53 == 1.3 Specification ==
54
55
56 (% style="color:#037691" %)**Rated environmental conditions:**
57
58 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:500px" %)
59 |(% style="background-color:#d9e2f3; color:#0070c0; width:163px" %)**Item**|(% style="background-color:#d9e2f3; color:#0070c0; width:90px" %)(((
60 **Minimum value**
61 )))|(% style="background-color:#d9e2f3; color:#0070c0; width:70px" %)(((
62 **Typical value**
63 )))|(% style="background-color:#d9e2f3; color:#0070c0; width:87px" %)(((
64 **Maximum value**
65 )))|(% style="background-color:#d9e2f3; color:#0070c0; width:40px" %)**Unit**|(% style="background-color:#d9e2f3; color:#0070c0; width:50px" %)**Remarks**
66 |(% style="width:174px" %)Storage temperature|(% style="width:86px" %)-25|(% style="width:66px" %)25|(% style="width:90px" %)80|(% style="width:48px" %)℃|(% style="width:203px" %)
67 |(% style="width:174px" %)Storage humidity|(% style="width:86px" %) |(% style="width:66px" %)65%|(% style="width:90px" %)90%|(% style="width:48px" %)RH|(% style="width:203px" %)(1)
68 |(% style="width:174px" %)Operating temperature|(% style="width:86px" %)-15|(% style="width:66px" %)25|(% style="width:90px" %)60|(% style="width:48px" %)℃|(% style="width:203px" %)
69 |(% style="width:174px" %)Working humidity|(% style="width:86px" %)(((
70
71
72
73 )))|(% style="width:66px" %)65%|(% style="width:90px" %)80%|(% style="width:48px" %)RH|(% style="width:203px" %)(1)
74
75 (((
76 (% style="color:red" %)**Remarks: (1) a. When the ambient temperature is 0-39 ℃, the maximum humidity is 90% (non-condensing);       **
77
78 (% 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)**
79
80
81 )))
82
83 (% style="color:#037691" %)**Common DC Characteristics:**
84
85 * Supply Voltage: built in 8500mAh Li-SOCI2 battery , 2.5v ~~ 3.6v
86 * Operating Temperature: -40 ~~ 85°C
87
88 (% style="color:#037691" %)**LoRa Spec:**
89
90 * Frequency Range,  Band 1 (HF): 862 ~~ 1020 Mhz
91 * Max +22 dBm constant RF output vs.
92 * RX sensitivity: down to -139 dBm.
93 * Excellent blocking immunity
94
95 (% style="color:#037691" %)**Battery:**
96
97 * Li/SOCI2 un-chargeable battery
98 * Capacity: 8500mAh
99 * Self-Discharge: <1% / Year @ 25°C
100 * Max continuously current: 130mA
101 * Max boost current: 2A, 1 second
102
103 (% style="color:#037691" %)**Power Consumption**
104
105 * Sleep Mode: 5uA @ 3.3v
106 * LoRa Transmit Mode: 125mA @ 20dBm, 82mA @ 14dBm
107
108 == 1.4 Effective measurement range Reference beam pattern ==
109
110
111 (% 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.**
112
113 [[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"]]
114
115
116 (% 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.**
117
118 [[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"]]
119
120
121 == 1.5 Applications ==
122
123
124 * Horizontal distance measurement
125 * Liquid level measurement
126 * Parking management system
127 * Object proximity and presence detection
128 * Intelligent trash can management system
129 * Robot obstacle avoidance
130 * Automatic control
131 * Sewer
132 * Bottom water level monitoring
133
134 == 1.6 Sleep mode and working mode ==
135
136
137 (% 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.
138
139 (% 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.
140
141
142 == 1.7 Button & LEDs ==
143
144
145 [[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675071855856-879.png]]
146
147
148 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
149 |=(% 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**
150 |(% style="width:167px" %)Pressing ACT between 1s < time < 3s|(% style="width:117px" %)Send an uplink|(% style="width:225px" %)(((
151 If sensor is already Joined to LoRaWAN network, sensor will send an uplink packet, (% style="color:blue" %)**blue led** (%%)will blink once.
152 Meanwhile, BLE module will be active and user can connect via BLE to configure device.
153 )))
154 |(% style="width:167px" %)Pressing ACT for more than 3s|(% style="width:117px" %)Active Device|(% style="width:225px" %)(((
155 (% 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.
156 (% style="color:green" %)**Green led**(%%) will solidly turn on for 5 seconds after joined in network.
157 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.
158 )))
159 |(% 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.
160
161 == 1.8 BLE connection ==
162
163
164 DDS75-LB support BLE remote configure.
165
166
167 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:
168
169 * Press button to send an uplink
170 * Press button to active device.
171 * Device Power on or reset.
172
173 If there is no activity connection on BLE in 60 seconds, sensor will shut down BLE module to enter low power mode.
174
175
176 == 1.9 Pin Definitions ==
177
178 [[image:image-20230523174230-1.png]]
179
180
181
182
183 == 2.10 Mechanical ==
184
185
186 [[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675143884058-338.png]]
187
188
189 [[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675143899218-599.png]]
190
191
192 [[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675143909447-639.png]]
193
194
195 (% style="color:blue" %)**Probe Mechanical:**
196
197
198 [[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-20220610172003-1.png?rev=1.1||alt="image-20220610172003-1.png"]]
199
200
201 [[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-20220610172003-2.png?rev=1.1||alt="image-20220610172003-2.png"]]
202
203
204 [[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-20220610172003-2.png?rev=1.1||alt="image-20220610172003-2.png"]]
205
206
207 = 2. Configure DDS75-LB to connect to LoRaWAN network =
208
209 == 2.1 How it works ==
210
211
212 The DDS75-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 DDS75-LB. It will automatically join the network via OTAA and start to send the sensor value. The default uplink interval is 20 minutes.
213
214 (% style="display:none" %) (%%)
215
216 == 2.2 ​Quick guide to connect to LoRaWAN server (OTAA) ==
217
218
219 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.
220
221 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.
222
223 [[image:image-20230612171032-3.png||height="492" width="855"]](% style="display:none" %)
224
225
226 (% style="color:blue" %)**Step 1:**(%%) Create a device in TTN with the OTAA keys from DDS75-LB.
227
228 Each DDS75-LB is shipped with a sticker with the default device EUI as below:
229
230 [[image:image-20230426084152-1.png||alt="图片-20230426084152-1.png" height="233" width="502"]]
231
232
233 You can enter this key in the LoRaWAN Server portal. Below is TTN screen shot:
234
235
236 (% style="color:blue" %)**Register the device**
237
238 [[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"]]
239
240
241 (% style="color:blue" %)**Add APP EUI and DEV EUI**
242
243 [[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"]]
244
245
246 (% style="color:blue" %)**Add APP EUI in the application**
247
248
249 [[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"]]
250
251
252 (% style="color:blue" %)**Add APP KEY**
253
254 [[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"]]
255
256
257 (% style="color:blue" %)**Step 2:**(%%) Activate on DDS75-LB
258
259
260 Press the button for 5 seconds to activate the DDS75-LB.
261
262 (% 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.
263
264 After join success, it will start to upload messages to TTN and you can see the messages in the panel.
265
266
267 == 2.3  ​Uplink Payload ==
268
269
270 (((
271 DDS75-LB will uplink payload via LoRaWAN with below payload format: 
272 )))
273
274 (((
275 Uplink payload includes in total 8 bytes.
276 )))
277
278 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:510px" %)
279 |=(% style="width: 62.5px;background-color:#D9E2F3;color:#0070C0" %)(((
280 **Size(bytes)**
281 )))|=(% 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**
282 |(% style="width:62.5px" %)**Value**|(% style="width:62.5px" %)[[BAT>>||anchor="H2.3.1A0BatteryInfo"]]|(((
283 [[Distance>>||anchor="H2.3.2A0Distance"]]
284 (unit: mm)
285 )))|[[Digital Interrupt (Optional)>>||anchor="H2.3.3A0InterruptPin"]]|(((
286 [[Temperature (Optional )>>||anchor="H2.3.4A0DS18B20Temperaturesensor"]]
287 )))|[[Sensor Flag>>||anchor="H2.3.5A0SensorFlag"]]
288
289 [[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"]]
290
291
292 === 2.3.1  Battery Info ===
293
294
295 Check the battery voltage for DDS75-LB.
296
297 Ex1: 0x0B45 = 2885mV
298
299 Ex2: 0x0B49 = 2889mV
300
301
302 === 2.3.2  Distance ===
303
304
305 (((
306 Get the distance. Flat object range 280mm - 7500mm.
307 )))
308
309 (((
310 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" %)** **
311
312 (% style="color:#4472c4" %)**0B05(H) = 2821 (D) = 2821 mm.**
313 )))
314
315
316 * If the sensor value is 0x0000, it means system doesn't detect ultrasonic sensor.
317 * If the sensor value lower than 0x0118 (280mm), the sensor value will be invalid. Since v1.1.4, all value lower than 280mm will be set to 0x0014(20mm) which means the value is invalid.
318
319
320 === 2.3.3  Interrupt Pin ===
321
322
323 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.
324
325 **Example:**
326
327 0x00: Normal uplink packet.
328
329 0x01: Interrupt Uplink Packet.
330
331
332 === 2.3.4  DS18B20 Temperature sensor ===
333
334
335 This is optional, user can connect external DS18B20 sensor to the +3.3v, 1-wire and GND pin . and this field will report temperature.
336
337 **Example**:
338
339 If payload is: 0105H:  (0105 & FC00 == 0), temp = 0105H /10 = 26.1 degree
340
341 If payload is: FF3FH :  (FF3F & FC00 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.
342
343 (% style="color:red" %)**Note: DS18B20 feature is supported in the hardware version > v1.3 which made since early of 2021.**
344
345
346 === 2.3.5  Sensor Flag ===
347
348
349 (((
350 0x01: Detect Ultrasonic Sensor
351 )))
352
353 (((
354 0x00: No Ultrasonic Sensor
355 )))
356
357
358 === 2.3.6  Decode payload in The Things Network ===
359
360
361 While using TTN network, you can add the payload format to decode the payload.
362
363 [[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"]]
364
365 The payload decoder function for TTN V3 is here:
366
367 (((
368 DDS75-LB TTN V3 Payload Decoder:  [[ttps:~~/~~/github.com/dragino/dragino-end-node-decoder>>https://github.com/dragino/dragino-end-node-decoder]]
369 )))
370
371
372 == 2.4  Uplink Interval ==
373
374
375 The DDS75-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>>doc:Main.End Device AT Commands and Downlink Command.WebHome||anchor="H4.1ChangeUplinkInterval"]]
376
377
378 == 2.5  ​Show Data in DataCake IoT Server ==
379
380
381 (((
382 [[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:
383 )))
384
385 (((
386
387 )))
388
389 (((
390 (% style="color:blue" %)**Step 1**(%%)**: Be sure that your device is programmed and properly connected to the network at this time.**
391 )))
392
393 (((
394 (% 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:**
395 )))
396
397
398 [[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"]]
399
400
401 [[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"]]
402
403
404 (% style="color:blue" %)**Step 3**(%%)**: Create an account or log in Datacake.**
405
406 (% style="color:blue" %)**Step 4**(%%)**: Search the DDS75-LB and add DevEUI.**
407
408 [[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"]]
409
410
411 After added, the sensor data arrive TTN V3, it will also arrive and show in Datacake.
412
413 [[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"]]
414
415
416
417 == 2.6 Datalog Feature ==
418
419
420 Datalog Feature is to ensure IoT Server can get all sampling data from Sensor even if the LoRaWAN network is down. For each sampling, DDS75-LB will store the reading for future retrieving purposes.
421
422
423 === 2.6.1 Ways to get datalog via LoRaWAN ===
424
425
426 Set PNACKMD=1, DDS75-LB will wait for ACK for every uplink, when there is no LoRaWAN network,DDS75-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.
427
428 * (((
429 a) DDS75-LB will do an ACK check for data records sending to make sure every data arrive server.
430 )))
431 * (((
432 b) DDS75-LB will send data in **CONFIRMED Mode** when PNACKMD=1, but DDS75-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 DDS75-LB gets a ACK, DDS75-LB will consider there is a network connection and resend all NONE-ACK messages.
433 )))
434
435 Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
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-20220703111700-2.png?width=1119&height=381&rev=1.1||alt="图片-20220703111700-2.png" height="381" width="1119"]]
438
439
440 === 2.6.2 Unix TimeStamp ===
441
442
443 DDS75-LB uses Unix TimeStamp format based on
444
445 [[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"]]
446
447 User can get this time from link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/]] :
448
449 Below is the converter example
450
451 [[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"]]
452
453
454 So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
455
456
457 === 2.6.3 Set Device Time ===
458
459
460 User need to set (% style="color:blue" %)**SYNCMOD=1**(%%) to enable sync time via MAC command.
461
462 Once DDS75-LB Joined LoRaWAN network, it will send the MAC command (DeviceTimeReq) and the server will reply with (DeviceTimeAns) to send the current time to DDS75-LB. If DDS75-LB fails to get the time from the server, DDS75-LB will use the internal time and wait for next time request (AT+SYNCTDC to set the time request period, default is 10 days).
463
464 (% 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.**
465
466
467 === 2.6.4 Poll sensor value ===
468
469
470 Users can poll sensor values based on timestamps. Below is the downlink command.
471
472 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:425.818px" %)
473 |(% colspan="4" style="background-color:#d9e2f3; color:#0070c0; width:423px" %)**Downlink Command to poll Open/Close status (0x31)**
474 |(% style="width:58px" %)**1byte**|(% style="width:127px" %)**4bytes**|(% style="width:124px" %)**4bytes**|(% style="width:114px" %)**1byte**
475 |(% style="width:58px" %)31|(% style="width:127px" %)Timestamp start|(% style="width:124px" %)Timestamp end|(% style="width:114px" %)Uplink Interval
476
477 (((
478 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.
479 )))
480
481 (((
482 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"]]
483 )))
484
485 (((
486 Is to check 2021/11/12 12:00:00 to 2021/11/12 15:00:00's data
487 )))
488
489 (((
490 Uplink Internal =5s，means DDS75-LB will send one packet every 5s. range 5~~255s.
491 )))
492
493
494 == 2.7 Frequency Plans ==
495
496
497 The DDS75-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.
498
499 [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20Frequency%20Band/>>http://wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20Frequency%20Band/]]
500
501
502 = 3. Configure DDS75-LB =
503
504 == 3.1 Configure Methods ==
505
506
507 DDS75-LB supports below configure method:
508
509 * AT Command via Bluetooth Connection (**Recommended**): [[BLE Configure Instruction>>http://wiki.dragino.com/xwiki/bin/view/Main/BLE%20Bluetooth%20Remote%20Configure/]].
510
511 * 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]].
512
513 * LoRaWAN Downlink.  Instruction for different platforms: See [[IoT LoRaWAN Server>>http://wiki.dragino.com/xwiki/bin/view/Main/]] section.
514
515 == 3.2 General Commands ==
516
517
518 These commands are to configure:
519
520 * General system settings like: uplink interval.
521
522 * LoRaWAN protocol & radio related command.
523
524 They are same for all Dragino Devices which support DLWS-005 LoRaWAN Stack. These commands can be found on the wiki:
525
526 [[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/]]
527
528
529 == 3.3 Commands special design for DDS75-LB ==
530
531
532 These commands only valid for DDS75-LB, as below:
533
534
535 === 3.3.1 Set Transmit Interval Time ===
536
537
538 (((
539 Feature: Change LoRaWAN End Node Transmit Interval.
540 )))
541
542 (((
543 (% style="color:blue" %)**AT Command: AT+TDC**
544 )))
545
546 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
547 |=(% 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**
548 |(% style="width:156px" %)AT+TDC=?|(% style="width:137px" %)Show current transmit Interval|(((
549 30000
550 OK
551 the interval is 30000ms = 30s
552 )))
553 |(% style="width:156px" %)AT+TDC=60000|(% style="width:137px" %)Set Transmit Interval|(((
554 OK
555 Set transmit interval to 60000ms = 60 seconds
556 )))
557
558 (((
559 (% style="color:blue" %)**Downlink Command: 0x01**
560 )))
561
562 (((
563 Format: Command Code (0x01) followed by 3 bytes time value.
564 )))
565
566 (((
567 If the downlink payload=0100003C, it means set the END Node's Transmit Interval to 0x00003C=60(S), while type code is 01.
568 )))
569
570 * (((
571 Example 1: Downlink Payload: 0100001E  ~/~/ Set Transmit Interval (TDC) = 30 seconds
572 )))
573 * (((
574 Example 2: Downlink Payload: 0100003C  ~/~/ Set Transmit Interval (TDC) = 60 seconds
575 )))
576
577 === 3.3.2 Set Interrupt Mode ===
578
579
580 Feature, Set Interrupt mode for PA8 of pin.
581
582 When AT+INTMOD=0 is set, PA8 is used as a digital input port.
583
584 (% style="color:blue" %)**AT Command: AT+INTMOD**
585
586 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
587 |=(% 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**
588 |(% style="width:154px" %)AT+INTMOD=?|(% style="width:196px" %)Show current interrupt mode|(% style="width:157px" %)(((
589 0
590 OK
591 the mode is 0 =Disable Interrupt
592 )))
593 |(% style="width:154px" %)AT+INTMOD=2|(% style="width:196px" %)(((
594 Set Transmit Interval
595 0. (Disable Interrupt),
596 ~1. (Trigger by rising and falling edge)
597 2. (Trigger by falling edge)
598 3. (Trigger by rising edge)
599 )))|(% style="width:157px" %)OK
600
601 (% style="color:blue" %)**Downlink Command: 0x06**
602
603 Format: Command Code (0x06) followed by 3 bytes.
604
605 This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.
606
607 * Example 1: Downlink Payload: 06000000  ~/~/  Turn off interrupt mode
608
609 * Example 2: Downlink Payload: 06000003  ~/~/  Set the interrupt mode to rising edge trigger
610
611 = 4. Battery & Power Consumption =
612
613
614 DDS75-LB use ER26500 + SPC1520 battery pack. See below link for detail information about the battery info and how to replace.
615
616 [[**Battery Info & Power Consumption Analyze**>>http://wiki.dragino.com/xwiki/bin/view/Main/How%20to%20calculate%20the%20battery%20life%20of%20Dragino%20sensors%3F/]] .
617
618
619 = 5. OTA Firmware update =
620
621
622 (% class="wikigeneratedid" %)
623 User can change firmware DDS75-LB to:
624
625 * Change Frequency band/ region.
626
627 * Update with new features.
628
629 * Fix bugs.
630
631 Firmware and changelog can be downloaded from : **[[Firmware download link>>url:https://www.dropbox.com/sh/7la95mae0fn03xe/AACtzs-32m22TLb75B-iIr-Qa?dl=0]]**
632
633 Methods to Update Firmware:
634
635 * (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/]]
636
637 * 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]]**.
638
639 = 6. FAQ =
640
641
642 == 6.1  What is the frequency plan for DDS75-LB? ==
643
644
645 DDS75-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"]]
646
647
648 == 6.2  Can I use DDS75-LB in condensation environment? ==
649
650
651 DDS75-LB is not suitable to be used in condensation environment. Condensation on the DDS75-LB probe will affect the reading and always got 0.
652
653
654 = 7.  Trouble Shooting =
655
656 == 7.1  Why I can't join TTN V3 in US915 / AU915 bands? ==
657
658
659 It is due to channel mapping. Please see below link:  [[Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
660
661
662 == 7.2  AT Command input doesn't work ==
663
664
665 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.
666
667
668 == 7.3  Why does the sensor reading show 0 or "No sensor" ==
669
670
671 ~1. The measurement object is very close to the sensor, but in the blind spot of the sensor.
672
673 2. Sensor wiring is disconnected
674
675 3. Not using the correct decoder
676
677
678 == 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 ==
679
680
681 1) Please check if there is something on the probe affecting its measurement (condensed water, volatile oil, etc.)
682
683 2) Does it change with temperature, temperature will affect its measurement
684
685 3) If abnormal data occurs, you can turn on DEBUG mode, Please use downlink or AT COMMAN to enter DEBUG mode.
686
687 downlink command: (% style="color:blue" %)**F1 01**(%%), AT command: (% style="color:blue" %)**AT+DDEBUG=1**
688
689 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
690
691 [[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"]]
692
693
694 Its original payload will be longer than other data. Even though it is being parsed, it can be seen that it is abnormal data.
695
696 Please send the data to us for check.
697
698
699 = 8. Order Info =
700
701
702 Part Number: (% style="color:blue" %)**DDS75-LB-XXX**
703
704 (% style="color:red" %)**XXX**(%%): **The default frequency band**
705
706 * (% style="color:red" %)**AS923**(%%): LoRaWAN AS923 band
707
708 * (% style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
709
710 * (% style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
711
712 * (% style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
713
714 * (% style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
715
716 * (% style="color:red" %)**US915**(%%): LoRaWAN US915 band
717
718 * (% style="color:red" %)**IN865**(%%): LoRaWAN IN865 band
719
720 * (% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
721
722
723 = 9. ​Packing Info =
724
725
726 (% style="color:#037691" %)**Package Includes**:
727
728 * DDS75-LB LoRaWAN Distance Detection Sensor x 1
729
730 (% style="color:#037691" %)**Dimension and weight**:
731
732 * Device Size: cm
733
734 * Device Weight: g
735
736 * Package Size / pcs : cm
737
738 * Weight / pcs : g
739
740
741 = 10. Support =
742
743
744 * 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.
745
746 * 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]].