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Last modified by Mengting Qiu on 2023/12/14 11:15
From version 93.1
edited by Saxer Lin
on 2023/08/05 10:45
Change comment: There is no comment for this version
To version 113.5
edited by Xiaoling
on 2023/11/10 09:51
Change comment: There is no comment for this version

Summary

Details

Page properties
Title
... ... @@ -1,1 +1,1 @@
1 -LDS12-LB -- LoRaWAN LiDAR ToF Distance Sensor User Manual
1 +DS20L -- LoRaWAN Smart Distance Detector User Manual
Author
... ... @@ -1,1 +1,1 @@
1 -XWiki.Saxer
1 +XWiki.Xiaoling
Content
... ... @@ -1,5 +1,5 @@
1 1  (% style="text-align:center" %)
2 -[[image:image-20230614153353-1.png]]
2 +[[image:image-20231110085342-2.png||height="481" width="481"]]
3 3  
4 4  
5 5  
... ... @@ -7,6 +7,7 @@
7 7  
8 8  
9 9  
10 +
10 10  **Table of Contents：**
11 11  
12 12  {{toc/}}
... ... @@ -18,170 +18,55 @@
18 18  
19 19  = 1. Introduction =
20 20  
21 -== 1.1 What is LoRaWAN LiDAR ToF Distance Sensor ==
22 +== 1.1 What is LoRaWAN Smart Distance Detector ==
22 22  
23 23  
24 -The Dragino LDS12-LB is a (% style="color:blue" %)**LoRaWAN LiDAR ToF (Time of Flight) Distance Sensor**(%%) for Internet of Things solution. It is capable to measure the distance to an object as close as 10 centimeters (+/- 5cm up to 6m) and as far as 12 meters (+/-1% starting at 6m)!. The LiDAR probe uses laser induction technology for distance measurement.
25 +The Dragino (% style="color:blue" %)**DS20L is a smart distance detector**(%%) base on long-range wireless LoRaWAN technology. It uses (% style="color:blue" %)**LiDAR sensor**(%%) to detect the distance between DS20L and object, then DS20L will send the distance data to the IoT Platform via LoRaWAN.
25 25  
26 -The LDS12-LB 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.
27 +DS20L allows users to send data and reach extremely long ranges via LoRaWAN. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current 
28 +consumption. It targets professional wireless sensor network applications such smart cities, building automation, and so on.
27 27  
28 -It detects the distance between the measured object and the sensor, and uploads the value via wireless to LoRaWAN IoT Server.
30 +DS20L has a (% style="color:blue" %)**built-in 2400mAh non-chargeable battery**(%%) for long-term use up to several years*. Users can also power DS20L with an external power source for (% style="color:blue" %)**continuous measuring and distance alarm / counting purposes.**
29 29  
30 -The LoRa wireless technology used in LDS12-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 +DS20L is fully compatible with (% style="color:blue" %)**LoRaWAN v1.0.3 Class A protocol**(%%), it can work with a standard LoRaWAN gateway.
31 31  
32 -LDS12-LB (% style="color:blue" %)**supports BLE configure**(%%) and (% style="color:blue" %)**wireless OTA update**(%%) which make user easy to use.
34 +DS20L supports (% style="color:blue" %)**Datalog feature**(%%). It will record the data when there is no network coverage and users can retrieve the sensor value later to ensure no miss for every sensor reading.
33 33  
34 -LDS12-LB is powered by (% style="color:blue" %)**8500mAh Li-SOCI2 battery**(%%), it is designed for long term use up to 5 years.
36 +[[image:image-20231110091506-4.png||height="391" width="768"]]
35 35  
36 -Each LDS12-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.
37 37  
38 -[[image:image-20230615152941-1.png||height="459" width="800"]]
39 -
40 -
41 41  == 1.2 ​Features ==
42 42  
43 43  
44 -* LoRaWAN 1.0.3 Class A
45 -* Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865
46 -* Ultra-low power consumption
47 -* Laser technology for distance detection
48 -* Measure Distance: 0.1m~~12m @ 90% Reflectivity
49 -* Accuracy :  ±5cm@(0.1-6m), ±1%@(6m-12m)
50 -* Monitor Battery Level
51 -* Support Bluetooth v5.1 and LoRaWAN remote configure
52 -* Support wireless OTA update firmware
42 +* LoRaWAN Class A protocol
43 +* LiDAR distance detector, range 3 ~~ 200cm
44 +* Periodically detect or continuously detect mode
53 53  * AT Commands to change parameters
54 -* Downlink to change configure
55 -* 8500mAh Battery for long term use
46 +* Remotely configure parameters via LoRaWAN Downlink
47 +* Alarm & Counting mode
48 +* Datalog Feature
49 +* Firmware upgradable via program port or LoRa protocol
50 +* Built-in 2400mAh battery or power by external power source
56 56  
57 -
58 58  == 1.3 Specification ==
59 59  
60 60  
61 -(% style="color:#037691" %)**Common DC Characteristics:**
55 +(% style="color:#037691" %)**LiDAR Sensor:**
62 62  
63 -* Supply Voltage: built in 8500mAh Li-SOCI2 battery , 2.5v ~~ 3.6v
64 -* Operating Temperature: -40 ~~ 85°C
57 +* Operation Temperature: -40 ~~ 80 °C
58 +* Operation Humidity: 0~~99.9%RH (no Dew)
59 +* Storage Temperature: -10 ~~ 45°C
60 +* Measure Range: 3cm~~200cm @ 90% reflectivity
61 +* Accuracy: ±2cm @ (3cm~~100cm); ±5% @ (100~~200cm)
62 +* ToF FoV: ±9°, Total 18°
63 +* Light source: VCSEL
65 65  
66 -(% style="color:#037691" %)**Probe Specification:**
67 67  
68 -* Storage temperature：-20℃~~75℃
69 -* Operating temperature : -20℃~~60℃
70 -* Measure Distance:
71 -** 0.1m ~~ 12m @ 90% Reflectivity
72 -** 0.1m ~~ 4m @ 10% Reflectivity
73 -* Accuracy : ±5cm@(0.1-6m), ±1%@(6m-12m)
74 -* Distance resolution : 5mm
75 -* Ambient light immunity : 70klux
76 -* Enclosure rating : IP65
77 -* Light source : LED
78 -* Central wavelength : 850nm
79 -* FOV : 3.6°
80 -* Material of enclosure : ABS+PC
81 -* Wire length : 25cm
82 -
83 -(% style="color:#037691" %)**LoRa Spec:**
84 -
85 -* Frequency Range,  Band 1 (HF): 862 ~~ 1020 Mhz
86 -* Max +22 dBm constant RF output vs.
87 -* RX sensitivity: down to -139 dBm.
88 -* Excellent blocking immunity
89 -
90 -(% style="color:#037691" %)**Battery:**
91 -
92 -* Li/SOCI2 un-chargeable battery
93 -* Capacity: 8500mAh
94 -* Self-Discharge: <1% / Year @ 25°C
95 -* Max continuously current: 130mA
96 -* Max boost current: 2A, 1 second
97 -
98 -(% style="color:#037691" %)**Power Consumption**
99 -
100 -* Sleep Mode: 5uA @ 3.3v
101 -* LoRa Transmit Mode: 125mA @ 20dBm, 82mA @ 14dBm
102 -
103 -
104 -== 1.4 Applications ==
105 -
106 -
107 -* Horizontal distance measurement
108 -* Parking management system
109 -* Object proximity and presence detection
110 -* Intelligent trash can management system
111 -* Robot obstacle avoidance
112 -* Automatic control
113 -* Sewer
114 -
115 -
116 116  (% style="display:none" %)
117 117  
118 -== 1.5 Sleep mode and working mode ==
119 119  
69 += 2. Configure DS20L to connect to LoRaWAN network =
120 120  
121 -(% 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.
122 -
123 -(% 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.
124 -
125 -
126 -== 1.6 Button & LEDs ==
127 -
128 -
129 -[[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675071855856-879.png]]
130 -
131 -
132 -(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
133 -|=(% style="width: 167px;background-color:#4F81BD;color:white" %)**Behavior on ACT**|=(% style="width: 117px;background-color:#4F81BD;color:white" %)**Function**|=(% style="width: 225px;background-color:#4F81BD;color:white" %)**Action**
134 -|(% style="width:167px" %)Pressing ACT between 1s < time < 3s|(% style="width:117px" %)Send an uplink|(% style="width:225px" %)(((
135 -If sensor is already Joined to LoRaWAN network, sensor will send an uplink packet, (% style="color:blue" %)**blue led** (%%)will blink once.
136 -Meanwhile, BLE module will be active and user can connect via BLE to configure device.
137 -)))
138 -|(% style="width:167px" %)Pressing ACT for more than 3s|(% style="width:117px" %)Active Device|(% style="width:225px" %)(((
139 -(% 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.
140 -(% style="color:green" %)**Green led**(%%) will solidly turn on for 5 seconds after joined in network.
141 -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.
142 -)))
143 -|(% 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.
144 -
145 -
146 -== 1.7 BLE connection ==
147 -
148 -
149 -LDS12-LB support BLE remote configure.
150 -
151 -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:
152 -
153 -* Press button to send an uplink
154 -* Press button to active device.
155 -* Device Power on or reset.
156 -
157 -If there is no activity connection on BLE in 60 seconds, sensor will shut down BLE module to enter low power mode.
158 -
159 -
160 -== 1.8 Pin Definitions ==
161 -
162 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/WL03A-LB_LoRaWAN_None-Position_Rope_Type_Water_Leak_Controller_User_Manual/WebHome/image-20230613144156-1.png?rev=1.1||alt="image-20230613144156-1.png"]]
163 -
164 -
165 -== 1.9 Mechanical ==
166 -
167 -
168 -[[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675143884058-338.png]]
169 -
170 -
171 -[[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675143899218-599.png]]
172 -
173 -
174 -[[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675143909447-639.png]]
175 -
176 -
177 -(% style="color:blue" %)**Probe Mechanical:**
178 -
179 -
180 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LLDS12-LoRaWAN%20LiDAR%20ToF%20Distance%20Sensor%20User%20Manual/WebHome/1654827224480-952.png?rev=1.1||alt="1654827224480-952.png"]]
181 -
182 -
183 -= 2. Configure LDS12-LB to connect to LoRaWAN network =
184 -
185 185  == 2.1 How it works ==
186 186  
187 187  
... ... @@ -196,7 +196,7 @@
196 196  
197 197  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.
198 198  
199 -[[image:image-20230615153004-2.png||height="459" width="800"]](% style="display:none" %)
85 +[[image:image-20231110091447-3.png||height="383" width="752"]](% style="display:none" %)
200 200  
201 201  
202 202  (% style="color:blue" %)**Step 1:**(%%) Create a device in TTN with the OTAA keys from LDS12-LB.
... ... @@ -316,7 +316,7 @@
316 316  (((
317 317  LDS12-LB will send this uplink **after** Device Status once join the LoRaWAN network successfully. And LDS12-LB will:
318 318  
319 -periodically send this uplink every 20 minutes, this interval [[can be changed>>https://111]].
205 +periodically send this uplink every 20 minutes, this interval [[can be changed>>||anchor="H3.3.1SetTransmitIntervalTime"]].
320 320  
321 321  Uplink Payload totals 11 bytes.
322 322  )))
... ... @@ -383,18 +383,33 @@
383 383  Customers can judge whether they need to adjust the environment based on the signal strength.
384 384  
385 385  
272 +**1) When the sensor detects valid data:**
273 +
274 +[[image:image-20230805155335-1.png||height="145" width="724"]]
275 +
276 +
277 +**2) When the sensor detects invalid data:**
278 +
279 +[[image:image-20230805155428-2.png||height="139" width="726"]]
280 +
281 +
282 +**3) When the sensor is not connected:**
283 +
284 +[[image:image-20230805155515-3.png||height="143" width="725"]]
285 +
286 +
386 386  ==== (% style="color:blue" %)**Interrupt Pin & Interrupt Level**(%%) ====
387 387  
388 388  
389 389  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.
390 390  
391 -Note: The Internet Pin is a separate pin in the screw terminal. See [[pin mapping>>||anchor="H1.8PinDefinitions"]].
292 +Note: The Internet Pin is a separate pin in the screw terminal. See [[pin mapping>>||anchor="H1.8PinDefinitions"]] of GPIO_EXTI .
392 392  
393 393  **Example:**
394 394  
395 -0x00: Normal uplink packet.
296 +If byte[0]&0x01=0x00 : Normal uplink packet.
396 396  
397 -0x01: Interrupt Uplink Packet.
298 +If byte[0]&0x01=0x01 : Interrupt Uplink Packet.
398 398  
399 399  
400 400  ==== (% style="color:blue" %)**LiDAR temp**(%%) ====
... ... @@ -420,13 +420,97 @@
420 420  
421 421  (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:499px" %)
422 422  |=(% style="width: 161px;background-color:#4F81BD;color:white" %)**Message Type Code**|=(% style="width: 164px;background-color:#4F81BD;color:white" %)**Description**|=(% style="width: 174px;background-color:#4F81BD;color:white" %)**Payload**
423 -|(% style="width:160px" %)0x01|(% style="width:163px" %)Normal Uplink|(% style="width:173px" %)[[Normal Uplink Payload>>||anchor="H2.3200BUplinkPayload"]]
424 -|(% style="width:160px" %)0x02|(% style="width:163px" %)Reply configures info|(% style="width:173px" %)[[Configure Info Payload>>||anchor="H3.ConfigureLDS12-LB"]]
324 +|(% style="width:160px" %)0x01|(% style="width:163px" %)Normal Uplink|(% style="width:173px" %)Normal Uplink Payload
325 +|(% style="width:160px" %)0x02|(% style="width:163px" %)Reply configures info|(% style="width:173px" %)Configure Info Payload
425 425  
327 +[[image:image-20230805150315-4.png||height="233" width="723"]]
426 426  
427 -=== 2.3.3 Decode payload in The Things Network ===
428 428  
330 +=== 2.3.3 Historical measuring distance, FPORT~=3 ===
429 429  
332 +
333 +LDS12-LB stores sensor values and users can retrieve these history values via the [[downlink command>>||anchor="H2.5.4Pollsensorvalue"]].
334 +
335 +The historical payload includes one or multiplies entries and every entry has the same payload as Real-Time measuring distance.
336 +
337 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
338 +|=(% style="width: 60px;background-color:#4F81BD;color:white" %)(((
339 +**Size(bytes)**
340 +)))|=(% style="width: 80px;background-color:#4F81BD;color:white" %)1|=(% style="width: 80px;background-color:#4F81BD;color:white" %)**1**|=(% style="width: 50px;background-color:#4F81BD;color:white" %)**2**|=(% style="width: 70px;background-color:#4F81BD;color:white" %)**2**|=(% style="background-color:#4F81BD; color: white; width: 85px;" %)**1**|=(% style="background-color: #4F81BD; color: white; width: 85px;" %)4
341 +|(% style="width:62.5px" %)Value|(% style="width:62.5px" %)Interrupt flag & Interrupt_level|(% style="width:62.5px" %)(((
342 +Reserve(0xFF)
343 +)))|Distance|Distance signal strength|(% style="width:88px" %)(((
344 +LiDAR temp
345 +)))|(% style="width:85px" %)Unix TimeStamp
346 +
347 +**Interrupt flag & Interrupt level:**
348 +
349 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:480px" %)
350 +|=(% style="width: 60px;background-color:#4F81BD;color:white" %)(((
351 +**Size(bit)**
352 +)))|=(% style="width: 90px;background-color:#4F81BD;color:white" %)**bit7**|=(% style="width: 90px;background-color:#4F81BD;color:white" %)**bit6**|=(% style="width: 60px;background-color:#4F81BD;color:white" %)**[bit5:bit2]**|=(% style="width: 90px; background-color: #4F81BD; color: white;" %)**bit1**|=(% style="background-color: #4F81BD; color: white; width: 90px;" %)**bit0**
353 +|(% style="width:62.5px" %)Value|(% style="width:62.5px" %)No ACK message|(% style="width:62.5px" %)Poll Message Flag|Reserve|(% style="width:91px" %)Interrupt level|(% style="width:88px" %)(((
354 +Interrupt flag
355 +)))
356 +
357 +* (((
358 +Each data entry is 11 bytes and has the same structure as [[Uplink Payload>>||anchor="H2.3.2UplinkPayload2CFPORT3D2"]], to save airtime and battery, LDS12-LB will send max bytes according to the current DR and Frequency bands.
359 +)))
360 +
361 +For example, in the US915 band, the max payload for different DR is:
362 +
363 +**a) DR0:** max is 11 bytes so one entry of data
364 +
365 +**b) DR1:** max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)
366 +
367 +**c) DR2:** total payload includes 11 entries of data
368 +
369 +**d) DR3:** total payload includes 22 entries of data.
370 +
371 +If LDS12-LB doesn't have any data in the polling time. It will uplink 11 bytes of 0
372 +
373 +
374 +**Downlink:**
375 +
376 +0x31 64 CC 68 0C 64 CC 69 74 05
377 +
378 +[[image:image-20230805144936-2.png||height="113" width="746"]]
379 +
380 +**Uplink:**
381 +
382 +43 FF 0E 10 00 B0 1E 64 CC 68 0C 40 FF 0D DE 00 A8 1E 64 CC 68 29 40 FF 09 92 00 D3 1E 64 CC 68 65 40 FF 02 3A 02 BC 1E 64 CC 68 A1 41 FF 0E 1A 00 A4 1E 64 CC 68 C0 40 FF 0D 2A 00 B8 1E 64 CC 68 E8 40 FF 00 C8 11 6A 1E 64 CC 69 24 40 FF 0E 24 00 AD 1E 64 CC 69 6D
383 +
384 +
385 +**Parsed Value:**
386 +
387 +[DISTANCE , DISTANCE_SIGNAL_STRENGTH，LIDAR_TEMP，EXTI_STATUS , EXTI_FLAG , TIME]
388 +
389 +
390 +[360,176,30,High,True,2023-08-04 02:53:00],
391 +
392 +[355,168,30,Low,False,2023-08-04 02:53:29],
393 +
394 +[245,211,30,Low,False,2023-08-04 02:54:29],
395 +
396 +[57,700,30,Low,False,2023-08-04 02:55:29],
397 +
398 +[361,164,30,Low,True,2023-08-04 02:56:00],
399 +
400 +[337,184,30,Low,False,2023-08-04 02:56:40],
401 +
402 +[20,4458,30,Low,False,2023-08-04 02:57:40],
403 +
404 +[362,173,30,Low,False,2023-08-04 02:58:53],
405 +
406 +
407 +**History read from serial port：**
408 +
409 +[[image:image-20230805145056-3.png]]
410 +
411 +
412 +=== 2.3.4 Decode payload in The Things Network ===
413 +
414 +
430 430  While using TTN network, you can add the payload format to decode the payload.
431 431  
432 432  [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LLDS12-LoRaWAN%20LiDAR%20ToF%20Distance%20Sensor%20User%20Manual/WebHome/1654592762713-715.png?rev=1.1||alt="1654592762713-715.png"]]
... ... @@ -494,11 +494,8 @@
494 494  b) LDS12-LB will send data in **CONFIRMED Mode** when PNACKMD=1, but LDS12-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 LDS12-LB gets a ACK, LDS12-LB will consider there is a network connection and resend all NONE-ACK messages.
495 495  )))
496 496  
497 -Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
498 498  
499 -[[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"]]
500 500  
501 -
502 502  === 2.5.2 Unix TimeStamp ===
503 503  
504 504  
... ... @@ -561,94 +561,8 @@
561 561  [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20Frequency%20Band/>>http://wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20Frequency%20Band/]]
562 562  
563 563  
564 -== 2.7 LiDAR ToF Measurement ==
546 +(% style="color:inherit; font-family:inherit; font-size:29px" %)3. Configure LDS12-LB
565 565  
566 -=== 2.7.1 Principle of Distance Measurement ===
567 -
568 -
569 -The LiDAR probe is based on TOF, namely, Time of Flight principle. To be specific, the product emits modulation wave of near infrared ray on a periodic basis, which will be reflected after contacting object. The product obtains the time of flight by measuring round-trip phase difference and then calculates relative range between the product and the detection object, as shown below.
570 -
571 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LLDS12-LoRaWAN%20LiDAR%20ToF%20Distance%20Sensor%20User%20Manual/WebHome/1654831757579-263.png?rev=1.1||alt="1654831757579-263.png"]]
572 -
573 -
574 -=== 2.7.2 Distance Measurement Characteristics ===
575 -
576 -
577 -With optimization of light path and algorithm, The LiDAR probe has minimized influence from external environment on distance measurement performance. Despite that, the range of distance measurement may still be affected by the environment illumination intensity and the reflectivity of detection object. As shown in below:
578 -
579 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LLDS12-LoRaWAN%20LiDAR%20ToF%20Distance%20Sensor%20User%20Manual/WebHome/1654831774373-275.png?rev=1.1||alt="1654831774373-275.png"]]
580 -
581 -
582 -(((
583 -(% style="color:blue" %)**① **(%%)Represents the detection blind zone of The LiDAR probe, 0-10cm, within which the output data is unreliable.
584 -)))
585 -
586 -(((
587 -(% style="color:blue" %)**② **(%%)Represents the operating range of The LiDAR probe detecting black target with 10% reflectivity, 0.1-5m.
588 -)))
589 -
590 -(((
591 -(% style="color:blue" %)**③ **(%%)Represents the operating range of The LiDAR probe detecting white target with 90% reflectivity, 0.1-12m.
592 -)))
593 -
594 -
595 -(((
596 -Vertical Coordinates: Represents the radius of light spot for The LiDAR probe at different distances. The diameter of light spot depends on the FOV of The LiDAR probe (the term of FOV generally refers to the smaller value between the receiving angle and the transmitting angle), which is calculated as follows:
597 -)))
598 -
599 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LLDS12-LoRaWAN%20LiDAR%20ToF%20Distance%20Sensor%20User%20Manual/WebHome/1654831797521-720.png?rev=1.1||alt="1654831797521-720.png"]]
600 -
601 -(((
602 -In the formula above, d is the diameter of light spot; D is detecting range; β is the value of the receiving angle of The LiDAR probe, 3.6°. Correspondence between the diameter of light spot and detecting range is given in Table below.
603 -)))
604 -
605 -[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LLDS12-LoRaWAN%20LiDAR%20ToF%20Distance%20Sensor%20User%20Manual/WebHome/1654831810009-716.png?rev=1.1||alt="1654831810009-716.png"]]
606 -
607 -(((
608 -If the light spot reaches two objects with different distances, as shown in Figure 3, the output distance value will be a value between the actual distance values of the two objects. For a high accuracy requirement in practice, the above situation should be noticed to avoid the measurement error.
609 -)))
610 -
611 -
612 -=== 2.7.3 Notice of usage ===
613 -
614 -
615 -Possible invalid /wrong reading for LiDAR ToF tech:
616 -
617 -* Measure high reflectivity object such as: Mirror, Smooth ceramic tile, static milk surface, will have possible wrong readings.
618 -* While there is transparent object such as glass, water drop between the measured object and the LiDAR sensor, the reading might be wrong.
619 -* The LiDAR probe is cover by dirty things; the reading might be wrong. In this case, need to clean the probe.
620 -* The sensor window is made by Acrylic. Don't touch it with alcohol material. This will destroy the sensor window.
621 -
622 -
623 -=== 2.7.4  Reflectivity of different objects ===
624 -
625 -
626 -(% border="1" cellspacing="5" style="background-color:#f2f2f2; width:379px" %)
627 -|=(% style="width: 54px;background-color:#4F81BD;color:white" %)Item|=(% style="width: 231px;background-color:#4F81BD;color:white" %)Material|=(% style="width: 94px;background-color:#4F81BD;color:white" %)Relectivity
628 -|(% style="width:53px" %)1|(% style="width:229px" %)Black foam rubber|(% style="width:93px" %)2.4%
629 -|(% style="width:53px" %)2|(% style="width:229px" %)Black fabric|(% style="width:93px" %)3%
630 -|(% style="width:53px" %)3|(% style="width:229px" %)Black rubber|(% style="width:93px" %)4%
631 -|(% style="width:53px" %)4|(% style="width:229px" %)Coal (different types of coal)|(% style="width:93px" %)4~~8%
632 -|(% style="width:53px" %)5|(% style="width:229px" %)Black car paint|(% style="width:93px" %)5%
633 -|(% style="width:53px" %)6|(% style="width:229px" %)Black Jam|(% style="width:93px" %)10%
634 -|(% style="width:53px" %)7|(% style="width:229px" %)Opaque black plastic|(% style="width:93px" %)14%
635 -|(% style="width:53px" %)8|(% style="width:229px" %)Clean rough board|(% style="width:93px" %)20%
636 -|(% style="width:53px" %)9|(% style="width:229px" %)Translucent plastic bottle|(% style="width:93px" %)62%
637 -|(% style="width:53px" %)10|(% style="width:229px" %)Carton cardboard|(% style="width:93px" %)68%
638 -|(% style="width:53px" %)11|(% style="width:229px" %)Clean pine|(% style="width:93px" %)70%
639 -|(% style="width:53px" %)12|(% style="width:229px" %)Opaque white plastic|(% style="width:93px" %)87%
640 -|(% style="width:53px" %)13|(% style="width:229px" %)White Jam|(% style="width:93px" %)90%
641 -|(% style="width:53px" %)14|(% style="width:229px" %)Kodak Standard Whiteboard|(% style="width:93px" %)100%
642 -|(% style="width:53px" %)15|(% style="width:229px" %)(((
643 -Unpolished white metal surface
644 -)))|(% style="width:93px" %)130%
645 -|(% style="width:53px" %)16|(% style="width:229px" %)Glossy light metal surface|(% style="width:93px" %)150%
646 -|(% style="width:53px" %)17|(% style="width:229px" %)stainless steel|(% style="width:93px" %)200%
647 -|(% style="width:53px" %)18|(% style="width:229px" %)Reflector plate, reflective tape|(% style="width:93px" %)>300%
648 -
649 -
650 -= 3. Configure LDS12-LB =
651 -
652 652  == 3.1 Configure Methods ==
653 653  
654 654  
... ... @@ -660,7 +660,6 @@
660 660  
661 661  * LoRaWAN Downlink.  Instruction for different platforms: See [[IoT LoRaWAN Server>>http://wiki.dragino.com/xwiki/bin/view/Main/]] section.
662 662  
663 -
664 664  == 3.2 General Commands ==
665 665  
666 666  
... ... @@ -729,9 +729,9 @@
729 729  === 3.3.2 Set Interrupt Mode ===
730 730  
731 731  
732 -Feature, Set Interrupt mode for PA8 of pin.
627 +Feature, Set Interrupt mode for pin of GPIO_EXTI.
733 733  
734 -When AT+INTMOD=0 is set, PA8 is used as a digital input port.
629 +When AT+INTMOD=0 is set, GPIO_EXTI is used as a digital input port.
735 735  
736 736  (% style="color:blue" %)**AT Command: AT+INTMOD**
737 737  
... ... @@ -742,7 +742,11 @@
742 742  OK
743 743  the mode is 0 =Disable Interrupt
744 744  )))
745 -|(% style="width:154px" %)AT+INTMOD=2|(% style="width:196px" %)(((
640 +|(% style="width:154px" %)(((
641 +AT+INTMOD=2
642 +
643 +(default)
644 +)))|(% style="width:196px" %)(((
746 746  Set Transmit Interval
747 747  0. (Disable Interrupt),
748 748  ~1. (Trigger by rising and falling edge)
... ... @@ -761,34 +761,6 @@
761 761  * Example 2: Downlink Payload: 06000003  ~/~/  Set the interrupt mode to rising edge trigger
762 762  
763 763  
764 -=== 3.3.3  Set Power Output Duration ===
765 -
766 -Control the output duration 3V3 . Before each sampling, device will
767 -
768 -~1. first enable the power output to external sensor,
769 -
770 -2. keep it on as per duration, read sensor value and construct uplink payload
771 -
772 -3. final, close the power output.
773 -
774 -(% style="color:blue" %)**AT Command: AT+3V3T**
775 -
776 -(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
777 -|=(% style="width: 155px;background-color:#4F81BD;color:white" %)**Command Example**|=(% style="width: 197px;background-color:#4F81BD;color:white" %)**Function**|=(% style="width: 158px;background-color:#4F81BD;color:white" %)**Response**
778 -|(% style="width:154px" %)AT+3V3T=?|(% style="width:196px" %)Show 3V3 open time.|(% style="width:157px" %)0 (default)
779 -OK
780 -|(% style="width:154px" %)AT+3V3T=1000|(% style="width:196px" %)Close after a delay of 1000 milliseconds.|(% style="width:157px" %)OK
781 -|(% style="width:154px" %)AT+3V3T=0|(% style="width:196px" %)Always turn on the power supply of 3V3 pin.|(% style="width:157px" %)OK
782 -
783 -(% style="color:blue" %)**Downlink Command: 0x07**(%%)
784 -Format: Command Code (0x07) followed by 3 bytes.
785 -
786 -The first byte is 01,the second and third bytes are the time to turn on.
787 -
788 -* Example 1: Downlink Payload: 07 01 00 00  **~-~-->**  AT+3V3T=0
789 -* Example 2: Downlink Payload: 07 01 01 F4  **~-~-->**  AT+3V3T=500
790 -
791 -
792 792  = 4. Battery & Power Consumption =
793 793  
794 794  
... ... @@ -817,7 +817,6 @@
817 817  
818 818  * 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]]**.
819 819  
820 -
821 821  = 6. FAQ =
822 822  
823 823  == 6.1 What is the frequency plan for LDS12-LB? ==
... ... @@ -858,7 +858,7 @@
858 858  = 8. Order Info =
859 859  
860 860  
861 -Part Number: (% style="color:blue" %)**LDS12-LB-XXX**
731 +Part Number: (% style="color:blue" %)**DS20L-XXX**
862 862  
863 863  (% style="color:red" %)**XXX**(%%): **The default frequency band**
864 864  
... ... @@ -878,13 +878,12 @@
878 878  
879 879  * (% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
880 880  
881 -
882 882  = 9. ​Packing Info =
883 883  
884 884  
885 885  (% style="color:#037691" %)**Package Includes**:
886 886  
887 -* LDS12-LB LoRaWAN LiDAR ToF Distance Sensor x 1
756 +* DS20L LoRaWAN Smart Distance Detector x 1
888 888  
889 889  (% style="color:#037691" %)**Dimension and weight**:
890 890  
... ... @@ -896,7 +896,6 @@
896 896  
897 897  * Weight / pcs : g
898 898  
899 -
900 900  = 10. Support =
901 901  
902 902  
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