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Version 241.16 by Xiaoling on 2023/06/13 18:01
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1 (% style="text-align:center" %)
2 [[image:image-20230203113613-1.png]]
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5
6
7 **Table of Contents:**
8
9 {{toc/}}
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17
18 = 1.  Introduction =
19
20 == 1.1 ​ What is LMDS120 Microwave Radar Distance Sensor ==
21
22
23 (((
24 The Dragino LMDS120 is a (% style="color:blue" %)**LoRaWAN Microwave Radar distance sensor**(%%). It uses use Microwave Radar to detect the distance between sensor and different objects. Different from ultrosonic or Lidar measurement. Microwave Radar is (% style="color:blue" %)**more reliable for condensation / dusty environment**(%%). It can sense correct distance even there is water or think dust on top of the sensor.
25 )))
26
27 (((
28 The LMDS120 can be applied to scenarios such as horizontal distance measurement, parking management system, object proximity and presence detection, intelligent trash can management system, robot obstacle avoidance, automatic control, sewer, etc.
29 )))
30
31 (((
32 The LoRa wireless technology used in LMDS120 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.
33 )))
34
35 (((
36 LMDS120 is powered by (% style="color:blue" %)**8500mAh Li-SOCI2 battery**(%%), it is designed for long term use up to 5 years.
37 )))
38
39 (((
40 Each LMDS120 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.
41 )))
42
43
44 [[image:image-20230203114147-2.png]]
45
46
47 == ​1.2  Features ==
48
49
50 * LoRaWAN 1.0.3 Class A
51 * Ultra-low power consumption
52 * 60Ghz Microwave Radar for distance detection
53 * Monitor Battery Level
54 * Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865
55 * AT Commands to change parameters
56 * Uplink on periodically
57 * Downlink to change configure
58 * 8500mAh Battery for long term use
59 * Wall Mountable
60 * Outdoor Use
61
62
63
64 == 1.3  Radar probe specification ==
65
66
67 * Measuring Method: FMCW
68 * Frequency: 60 GHz
69 * Measure Range : 15cm ~~ 1200cm
70 * Accuracy: ± (3mm + S*0.2%). S: Measure Value
71 * Resolution: 0.01m
72 * Measurement Angle : 25 degrees horizontal and 23 degrees vertical
73
74
75
76 == 1.4  Storage & Operation Temperature ==
77
78
79 -15°C to +65°C
80
81
82 == 1.5 ​ Applications ==
83
84
85 * Horizontal distance measurement
86 * Liquid level measurement
87 * Parking management system
88 * Object proximity and presence detection
89 * Intelligent trash can management system
90 * Robot obstacle avoidance
91 * Automatic control
92 * Sewer
93 * Bottom water level monitoring
94
95
96
97 == 1.6  Pin mapping and power on ==
98
99
100 [[image:1655257026882-201.png]]
101
102 (% style="display:none" %) (%%)
103
104 = 2.  Operation Mode =
105
106 == 2.1  How it works ==
107
108
109 (((
110 Each LMDS120 is shipped with a worldwide unique set of OTAA keys. To use LMDS120 in a LoRaWAN network, user needs to input the OTAA keys in the LoRaWAN network server. So LMDS120 can join the LoRaWAN network and start to transmit sensor data.
111 )))
112
113
114 == 2.2  ​Example to use for LoRaWAN network ==
115
116
117 (((
118 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 [[DLOS8 >>https://www.dragino.com/products/lora-lorawan-gateway/item/160-dlos8.html]] as a LoRaWAN gateway in this example.
119 )))
120
121 (((
122 [[image:image-20230203115545-3.png]]
123
124 * In this user case, the LMDS120 is installed on top of river to detect the water level and send the level info to the LoRaWAN server. The LMDS120 will uplink different types of messages to the LoRaWAN server. See [[Uplink payload>>path:#Uplink_Payload]] for detail.
125 )))
126
127 (((
128 Assume the LoRaWAN Gateway DLOS8 is already set to connect to the [[TTN V3 network >>url:https://eu1.cloud.thethings.network]]. We need to add the LMDS120 device in TTN V3:
129 )))
130
131 (((
132 (((
133
134 )))
135
136 (((
137 (% style="color:blue" %)**Step 1**(%%): Create a device in TTN with the OTAA keys from LMDS120.
138 )))
139 )))
140
141 (((
142 (((
143 Each LMDS120 is shipped with a sticker with the default device keys, user can find this sticker in the box. it looks like below.
144
145 [[image:image-20230426085652-1.png||height="258" width="556"]]
146
147
148 )))
149 )))
150
151 Users can enter these keys in the LoRaWAN Server portal. Below is the TTN V3 screenshot:
152
153 __**Add APP EUI**__ in the application.
154
155
156 [[image:image-20220610161353-4.png]]
157
158
159 [[image:image-20220610161353-5.png]]
160
161
162 [[image:image-20220610161353-6.png]]
163
164
165 [[image:image-20220610161353-7.png]]
166
167
168
169 You can also choose to create the device manually.
170
171 [[image:image-20220610161538-8.png]]
172
173
174
175 **Add APP KEY and DEV EUI**
176
177 [[image:1655278497961-944.png]]
178
179
180 (% style="color:blue" %)**Step 2**(%%):  Power on LMDS120
181
182
183 Put a Jumper on JP2 to power on the device. ( The Switch must be in FLASH position).
184
185 [[image:1655278589727-228.png]]
186
187 (((
188 Put the jumper to power on LMDS120 and it will auto-join to the TTN V3 network. After join success, it will start to upload sensor data to TTN V3 and the user can see it in the panel.
189 )))
190
191
192 == 2.3  ​Uplink Payload ==
193
194
195 Uplink payloads have two types:
196
197 * Distance Value: Use FPORT=2
198 * Other control commands: Use other FPORT fields.
199
200 The application server should parse the correct value based on FPORT settings.
201
202
203 === 2.3.1  Device Status, FPORT~=5 ===
204
205
206 (((
207 Include device configure status. Once LMDS120 Joined the network, it will uplink this message to the server.
208 )))
209
210 Users can also use the downlink command (0x26 01) to ask LMDS120 to resend Device Status.
211
212 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:490px" %)
213 |=(% colspan="6" style="background-color:#4F81BD;color:white" %)Device Status (FPORT=5)
214 |(% style="width:60px" %)**Size(bytes)**|(% style="width:80px" %)**1**|(% style="width:140px" %)**2**|(% style="width:140px" %)**1**|(% style="width:70px" %)**1**
215 |(% style="width:94px" %)**Value**|(% style="width:68px" %)Sensor Model|(% style="width:80px" %)Firmware Version|(% style="width:86px" %)Frequency Band|(% style="width:61px" %)Sub-band
216
217 [[image:image-20230203133803-4.png]]
218
219
220 * (% style="color:#037691" %)**Sensor Model:**(%%) For LMDS120, this value is 0x18
221
222 * (% style="color:#037691" %)**Firmware Version:**(%%) 0x0100, Means: v1.0.0 version
223
224 * (% style="color:#037691" %)**Frequency Band:**
225
226 *0x01: EU868
227
228 *0x02: US915
229
230 *0x03: IN865
231
232 *0x04: AU915
233
234 *0x05: KZ865
235
236 *0x06: RU864
237
238 *0x07: AS923
239
240 *0x08: AS923-1
241
242 *0x09: AS923-2
243
244 *0x0a: AS923-3
245
246 *0x0b: AS923-4
247
248
249 * (% style="color:#037691" %)**Sub-Band**(%%)**:**
250 ** AU915 and US915:value 0x00 ~~ 0x08
251 ** CN470: value 0x0B ~~ 0x0C
252 ** Other Bands: Always 0x00
253
254
255
256 === 2.3.2  Distance, Uplink FPORT~=2 ===
257
258
259 LMDS120 will send this uplink **after** Device Status once join the LoRaWAN network successfully. And LMDS120 will:
260
261 1. periodically send this uplink every 20 minute (TDC time), this interval [[can be changed>>||anchor="H3.1A0SetTransmitIntervalTime280x0129"]].
262 1. send this uplink while there is [[interrupt event>>||anchor="H3.2A0SetInterruptMode280x0629"]].
263
264 Uplink Payload totals 8 bytes.
265
266 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:400px" %)
267 |=(% colspan="6" style="width: 400px;background-color:#4F81BD;color:white" %)**Distance Value, FPORT=2**
268 |(% style="width:60px" %)**Size(bytes)**|(% style="width:40px" %)**2**|(% style="width:60px" %)**2**|(% style="width:60px" %)**1**|(% style="width:100px" %)**2**|(% style="width:80px" %)**1**
269 |(% style="width:72px" %)**Value**|(% style="width:43px" %)BAT|(% style="width:76px" %)Distance|(% style="width:76px" %)interrupt|(% style="width:75px" %)DS18B20 temperature|(% style="width:75px" %)Sensor flag
270
271 [[image:image-20230203142732-5.png]]
272
273
274 (((
275 (% style="color:blue" %)**Distance:**
276 )))
277
278 (((
279 Distance between sensor probe to the first object. (unit: cm)
280 )))
281
282 (((
283 For example, if the data you get from the register is** __0x0D 0xC6__**, the distance between the sensor and the measured object is(% style="color:#037691" %)** 0DC6(H) = 115 (D) = 115 cm.**
284 )))
285
286
287 (((
288 (% style="color:red" %)**Notice: The distance has a special value :**
289 )))
290
291 (((
292 (% style="color:blue" %)**0x3FFF**(%%): Reading Invalid (exceed the valid range of the probe) or Probe not detected.
293 )))
294
295
296 === 2.3.3  Decoder in TTN V3 ===
297
298
299 [[image:1655261164557-670.png]]
300
301
302 (((
303 Please check the decoder from this link: [[https:~~/~~/github.com/dragino/dragino-end-node-decoder>>https://github.com/dragino/dragino-end-node-decoder]]
304 )))
305
306
307 == 2.4  ​Show data on Datacake ==
308
309
310 (((
311 Datacake IoT platform provides a human-friendly interface to show the sensor data, once we have sensor data in TTN V3, we can use Datacake to connect to TTN V3 and see the data in Datacake. Below are the steps:
312
313
314 )))
315
316 (((
317 (% style="color:blue" %)**Step 1**(%%)**: **Link TTNv3 to [[DATACAKE>>url:https://datacake.co/]]
318 )))
319
320 (((
321 (% style="color:blue" %)**Step 2**(%%)**: **Configure LMDS120 in Datacake
322 )))
323
324
325 [[image:image-20230203150230-6.png]]
326
327
328 [[image:image-20220615163646-7.png]]
329
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331 [[image:image-20230203150402-8.png]]
332
333
334 [[image:image-20230203150513-9.png]]
335
336 (% style="display:none" %) (%%)
337
338 [[image:image-20230203150531-10.png]](% style="display:none" %)
339
340
341 (% style="display:none" %)
342
343 (% style="display:none" %) (%%) [[image:image-20230203150555-11.png]]
344
345
346 (% style="display:none" %)
347
348 = 3.  Configure LMDS120 via AT Command or LoRaWAN Downlink =
349
350
351 (((
352 (((
353 Use can configure LMDS120 via AT Command or LoRaWAN Downlink.
354 )))
355 )))
356
357 * (((
358 (((
359 AT Command Connection: See [[FAQ>>||anchor="H5.A0FAQ"]].
360 )))
361 )))
362 * (((
363 (((
364 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
365 )))
366 )))
367
368 (((
369 (((
370
371 )))
372
373 (((
374 There are two kinds of commands to configure LMDS120, they are:
375 )))
376 )))
377
378 * (((
379 (((
380 (% style="color:#4f81bd" %)** General Commands**.
381 )))
382 )))
383
384 (((
385 (((
386 These commands are to configure:
387 )))
388 )))
389
390 * (((
391 (((
392 General system settings like: uplink interval.
393 )))
394 )))
395 * (((
396 (((
397 LoRaWAN protocol & radio related command.
398 )))
399 )))
400
401 (((
402 (((
403 They are same for all Dragino Device which support DLWS-005 LoRaWAN Stack**(Note~*~*)**. These commands can be found on the wiki: [[End Device AT Commands and Downlink Command>>doc:Main.End Device AT Commands and Downlink Command.WebHome]]
404 )))
405 )))
406
407 (((
408 (((
409
410 )))
411 )))
412
413 * (((
414 (((
415 (% style="color:#4f81bd" %)** Commands special design for LMDS120**
416 )))
417 )))
418
419 (((
420 (((
421 These commands only valid for LMDS120, as below:
422 )))
423 )))
424
425
426 == 3.1  Set Transmit Interval Time(0x01) ==
427
428
429 Feature: Change LoRaWAN End Node Transmit Interval.
430
431 (% style="color:#037691" %)**AT Command: AT+TDC**
432
433 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
434 |=(% style="width: 156px;background-color:#4F81BD;color:white" %)**Command Example**|=(% style="width: 137px;background-color:#4F81BD;color:white" %)**Function**|=(% style="background-color:#4F81BD;color:white" %)**Response**
435 |(% style="width:156px" %)AT+TDC=?|(% style="width:137px" %)Show current transmit Interval|(((
436 30000
437 OK
438 the interval is 30000ms = 30s
439 )))
440 |(% style="width:156px" %)AT+TDC=60000|(% style="width:137px" %)Set Transmit Interval|(((
441 OK
442 Set transmit interval to 60000ms = 60 seconds
443 )))
444
445 (((
446 (% style="color:#037691" %)**Downlink Command: 0x01**
447 )))
448
449 Format: Command Code (0x01) followed by 3 bytes time value.
450
451 If the downlink payload=0100003C, it means set the END Node's Transmit Interval to 0x00003C=60(S), while type code is 01.
452
453 **Example 1:** Downlink Payload: 0100001E  ~/~/  Set Transmit Interval (TDC) = 30 seconds
454
455 **Example 2: **Downlink Payload: 0100003C  ~/~/  Set Transmit Interval (TDC) = 60 seconds
456
457
458 == 3.2  Set Interrupt Mode(0x06) ==
459
460
461 (((
462 Feature, Set Interrupt mode for GPIO_EXIT.
463 )))
464
465 (((
466 (% style="color:#037691" %)**Downlink Command: AT+INTMOD**
467 )))
468
469 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
470 |=(% style="width: 154px;background-color:#4F81BD;color:white" %)**Command Example**|=(% style="width: 196px;background-color:#4F81BD;color:white" %)**Function**|=(% style="width: 157px;background-color:#4F81BD;color:white" %)**Response**
471 |(% style="width:154px" %)AT+INTMOD=?|(% style="width:196px" %)Show current interrupt mode|(% style="width:157px" %)(((
472 0
473 OK
474 the mode is 0 = No interruption
475 )))
476 |(% style="width:154px" %)AT+INTMOD=2|(% style="width:196px" %)(((
477 Set Transmit Interval
478 ~1. (Disable Interrupt),
479 2. (Trigger by rising and falling edge)
480 3. (Trigger by falling edge)
481 4. (Trigger by rising edge)
482 )))|(% style="width:157px" %)OK
483
484 (% style="color:#037691" %)**Downlink Command: 0x06**
485
486 Format: Command Code (0x06) followed by 3 bytes.
487
488 This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.
489
490 **Example 1: **Downlink Payload: 06000000  ~/~/ Turn off interrupt mode
491
492 **Example 2:** Downlink Payload: 06000003  ~/~/ Set the interrupt mode to rising edge trigger
493
494
495 = 4. Battery & Power Consumption =
496
497
498 LMDS120 uses ER26500 + SPC1520 battery pack. See below link for detail information about the battery info and how to replace.
499
500 [[**Battery Info & Power Consumption Analyze**>>url:http://wiki.dragino.com/xwiki/bin/view/Main/How%20to%20calculate%20the%20battery%20life%20of%20Dragino%20sensors%3F/]] .
501
502
503 = 5.  FAQ =
504
505 == 5.1  How to use AT Command to configure LMDS120 ==
506
507
508 LMDS120 UART connection photo
509
510
511 [[image:image-20230203155404-15.png]]
512
513
514 LMDS120 supports AT Command set. User can use a USB to TTL adapter plus the 3.5mm Program Cable to connect to LMDS120 to use AT command, as below.
515
516 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/test/WebHome/1654135840598-282.png?rev=1.1||alt="1654135840598-282.png"]]
517
518
519 In the PC, you need to set the serial baud rate to (% style="color:green" %)**9600**(%%) to access the serial console for LMDS120. LMDS120 will output system info once power on as below:
520
521 [[image:image-20220615180555-4.png]]
522
523
524 == 5.2  How to upgrade the firmware? ==
525
526
527 (((
528 A new firmware might be available for:
529 )))
530
531 * (((
532 Support new features
533 )))
534 * (((
535 For bug fix
536 )))
537 * (((
538 Change LoRaWAN bands.
539 )))
540
541 (((
542 Instruction for how to upgrade: [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/Firmware%20Upgrade%20Instruction%20for%20STM32%20base%20products/#H2.HardwareUpgradeMethodSupportList>>http://wiki.dragino.com/xwiki/bin/view/Main/Firmware%20Upgrade%20Instruction%20for%20STM32%20base%20products/#H2.HardwareUpgradeMethodSupportList]]
543 )))
544
545 (((
546 Firmware location: [[https:~~/~~/www.dropbox.com/sh/vxhj7k0utq5dk4a/AAC-DW1UeeWSnSPeG-lHWg4da?dl=0>>https://www.dropbox.com/sh/vxhj7k0utq5dk4a/AAC-DW1UeeWSnSPeG-lHWg4da?dl=0]]
547 )))
548
549
550 == 5.3  How to change the LoRa Frequency Bands/Region ==
551
552
553 You can follow the instructions for [[how to upgrade image>>||anchor="H5.2A0Howtoupgradethefirmware3F"]].
554 When downloading the images, choose the required image file for download. ​
555
556
557 = 6.  Trouble Shooting =
558
559 == 6.1  AT Command input doesn't work ==
560
561
562 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:green" %)**ENTER**(%%) while sending out the command. Some serial tool doesn't send (% style="color:green" %)**ENTER**(%%) while press the send key, user need to add ENTER in their string.
563
564
565 = 7.  Order Info =
566
567
568 Part Number **:** (% style="color:blue" %)**LMDS120-XX**
569
570 (% style="color:blue" %)**XX**(%%)**: **The default frequency band
571
572 * (% style="color:red" %)**AS923 **(%%)**:** LoRaWAN AS923 band
573 * (% style="color:red" %)**AU915 **(%%)**:** LoRaWAN AU915 band
574 * (% style="color:red" %)**EU433 **(%%)**:** LoRaWAN EU433 band
575 * (% style="color:red" %)**EU868 **(%%)**:** LoRaWAN EU868 band
576 * (% style="color:red" %)**KR920 **(%%)**:** LoRaWAN KR920 band
577 * (% style="color:red" %)**US915 **(%%)**:** LoRaWAN US915 band
578 * (% style="color:red" %)**IN865 **(%%)**:**  LoRaWAN IN865 band
579 * (% style="color:red" %)**CN470 **(%%)**:** LoRaWAN CN470 band
580
581
582
583 = 8. ​ Packing Info =
584
585
586 (((
587 **Package Includes**:
588 )))
589
590 (((
591 * LMDS120 LoRaWAN Microwave Radar Distance Sensor x 1
592 )))
593
594
595
596 = 9.  ​Support =
597
598
599 * 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.
600
601 * 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.com>>url:http://../../../../../../D:%5C%E5%B8%82%E5%9C%BA%E8%B5%84%E6%96%99%5C%E8%AF%B4%E6%98%8E%E4%B9%A6%5CLoRa%5CLT%E7%B3%BB%E5%88%97%5Csupport@dragino.com]].