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Last modified by Mengting Qiu on 2023/12/14 11:15
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edited by Saxer Lin
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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/}}
... ... @@ -18,166 +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 57  == 1.3 Specification ==
58 58  
59 59  
60 -(% style="color:#037691" %)**Common DC Characteristics:**
55 +(% style="color:#037691" %)**LiDAR Sensor:**
61 61  
62 -* Supply Voltage: built in 8500mAh Li-SOCI2 battery , 2.5v ~~ 3.6v
63 -* 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
64 64  
65 -(% style="color:#037691" %)**Probe Specification:**
66 66  
67 -* Storage temperature：-20℃~~75℃
68 -* Operating temperature : -20℃~~60℃
69 -* Measure Distance:
70 -** 0.1m ~~ 12m @ 90% Reflectivity
71 -** 0.1m ~~ 4m @ 10% Reflectivity
72 -* Accuracy : ±5cm@(0.1-6m), ±1%@(6m-12m)
73 -* Distance resolution : 5mm
74 -* Ambient light immunity : 70klux
75 -* Enclosure rating : IP65
76 -* Light source : LED
77 -* Central wavelength : 850nm
78 -* FOV : 3.6°
79 -* Material of enclosure : ABS+PC
80 -* Wire length : 25cm
81 -
82 -(% style="color:#037691" %)**LoRa Spec:**
83 -
84 -* Frequency Range,  Band 1 (HF): 862 ~~ 1020 Mhz
85 -* Max +22 dBm constant RF output vs.
86 -* RX sensitivity: down to -139 dBm.
87 -* Excellent blocking immunity
88 -
89 -(% style="color:#037691" %)**Battery:**
90 -
91 -* Li/SOCI2 un-chargeable battery
92 -* Capacity: 8500mAh
93 -* Self-Discharge: <1% / Year @ 25°C
94 -* Max continuously current: 130mA
95 -* Max boost current: 2A, 1 second
96 -
97 -(% style="color:#037691" %)**Power Consumption**
98 -
99 -* Sleep Mode: 5uA @ 3.3v
100 -* LoRa Transmit Mode: 125mA @ 20dBm, 82mA @ 14dBm
101 -
102 -== 1.4 Applications ==
103 -
104 -
105 -* Horizontal distance measurement
106 -* Parking management system
107 -* Object proximity and presence detection
108 -* Intelligent trash can management system
109 -* Robot obstacle avoidance
110 -* Automatic control
111 -* Sewer
112 -
113 113  (% style="display:none" %)
114 114  
115 -== 1.5 Sleep mode and working mode ==
116 116  
69 += 2. Configure DS20L to connect to LoRaWAN network =
117 117  
118 -(% 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.
119 -
120 -(% 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.
121 -
122 -
123 -== 1.6 Button & LEDs ==
124 -
125 -
126 -[[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675071855856-879.png]]
127 -
128 -
129 -(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
130 -|=(% 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**
131 -|(% style="width:167px" %)Pressing ACT between 1s < time < 3s|(% style="width:117px" %)Send an uplink|(% style="width:225px" %)(((
132 -If sensor is already Joined to LoRaWAN network, sensor will send an uplink packet, (% style="color:blue" %)**blue led** (%%)will blink once.
133 -Meanwhile, BLE module will be active and user can connect via BLE to configure device.
134 -)))
135 -|(% style="width:167px" %)Pressing ACT for more than 3s|(% style="width:117px" %)Active Device|(% style="width:225px" %)(((
136 -(% 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.
137 -(% style="color:green" %)**Green led**(%%) will solidly turn on for 5 seconds after joined in network.
138 -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.
139 -)))
140 -|(% 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.
141 -
142 -== 1.7 BLE connection ==
143 -
144 -
145 -LDS12-LB support BLE remote configure.
146 -
147 -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:
148 -
149 -* Press button to send an uplink
150 -* Press button to active device.
151 -* Device Power on or reset.
152 -
153 -If there is no activity connection on BLE in 60 seconds, sensor will shut down BLE module to enter low power mode.
154 -
155 -
156 -== 1.8 Pin Definitions ==
157 -
158 -
159 -[[image:image-20230805144259-1.png||height="413" width="741"]]
160 -
161 -== 1.9 Mechanical ==
162 -
163 -
164 -[[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675143884058-338.png]]
165 -
166 -
167 -[[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675143899218-599.png]]
168 -
169 -
170 -[[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675143909447-639.png]]
171 -
172 -
173 -(% style="color:blue" %)**Probe Mechanical:**
174 -
175 -
176 -[[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"]]
177 -
178 -
179 -= 2. Configure LDS12-LB to connect to LoRaWAN network =
180 -
181 181  == 2.1 How it works ==
182 182  
183 183  
... ... @@ -192,7 +192,7 @@
192 192  
193 193  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.
194 194  
195 -[[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" %)
196 196  
197 197  
198 198  (% style="color:blue" %)**Step 1:**(%%) Create a device in TTN with the OTAA keys from LDS12-LB.
... ... @@ -312,7 +312,7 @@
312 312  (((
313 313  LDS12-LB will send this uplink **after** Device Status once join the LoRaWAN network successfully. And LDS12-LB will:
314 314  
315 -periodically send this uplink every 20 minutes, this interval [[can be changed>>http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDS12-LB_LoRaWAN_LiDAR_ToF_Distance_Sensor_User_Manual/#H3.3.1SetTransmitIntervalTime]].
205 +periodically send this uplink every 20 minutes, this interval [[can be changed>>||anchor="H3.3.1SetTransmitIntervalTime"]].
316 316  
317 317  Uplink Payload totals 11 bytes.
318 318  )))
... ... @@ -379,18 +379,33 @@
379 379  Customers can judge whether they need to adjust the environment based on the signal strength.
380 380  
381 381  
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 +
382 382  ==== (% style="color:blue" %)**Interrupt Pin & Interrupt Level**(%%) ====
383 383  
384 384  
385 385  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.
386 386  
387 -Note: The Internet Pin is a separate pin in the screw terminal. See GPIO_EXTI of [[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 .
388 388  
389 389  **Example:**
390 390  
391 -0x00: Normal uplink packet.
296 +If byte[0]&0x01=0x00 : Normal uplink packet.
392 392  
393 -0x01: Interrupt Uplink Packet.
298 +If byte[0]&0x01=0x01 : Interrupt Uplink Packet.
394 394  
395 395  
396 396  ==== (% style="color:blue" %)**LiDAR temp**(%%) ====
... ... @@ -416,8 +416,8 @@
416 416  
417 417  (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:499px" %)
418 418  |=(% 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**
419 -|(% style="width:160px" %)0x01|(% style="width:163px" %)Normal Uplink|(% style="width:173px" %)[[Normal Uplink Payload>>||anchor="H2.3200BUplinkPayload"]]
420 -|(% 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
421 421  
422 422  [[image:image-20230805150315-4.png||height="233" width="723"]]
423 423  
... ... @@ -424,14 +424,15 @@
424 424  
425 425  === 2.3.3 Historical measuring distance, FPORT~=3 ===
426 426  
427 -LDS12-LB stores sensor values and users can retrieve these history values via the [[downlink command>>http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDS12-LB_LoRaWAN_LiDAR_ToF_Distance_Sensor_User_Manual/#H2.5.4Pollsensorvalue]].
428 428  
429 -The historical payload includes one or multiplies entries and every entry has the same payload as Real-Time water flow status.
333 +LDS12-LB stores sensor values and users can retrieve these history values via the [[downlink command>>||anchor="H2.5.4Pollsensorvalue"]].
430 430  
335 +The historical payload includes one or multiplies entries and every entry has the same payload as Real-Time measuring distance.
336 +
431 431  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
432 432  |=(% style="width: 60px;background-color:#4F81BD;color:white" %)(((
433 433  **Size(bytes)**
434 -)))|=(% style="width: 30px;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: rgb(79, 129, 189); color: white; width: 88px;" %)**1**|=(% style="background-color: rgb(79, 129, 189); color: white; width: 85px;" %)4
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
435 435  |(% style="width:62.5px" %)Value|(% style="width:62.5px" %)Interrupt flag & Interrupt_level|(% style="width:62.5px" %)(((
436 436  Reserve(0xFF)
437 437  )))|Distance|Distance signal strength|(% style="width:88px" %)(((
... ... @@ -440,16 +440,16 @@
440 440  
441 441  **Interrupt flag & Interrupt level:**
442 442  
443 -(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:501px" %)
349 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:480px" %)
444 444  |=(% style="width: 60px;background-color:#4F81BD;color:white" %)(((
445 445  **Size(bit)**
446 -)))|=(% style="width: 30px;background-color:#4F81BD;color:white" %)**bit7**|=(% style="width: 80px;background-color:#4F81BD;color:white" %)**bit6**|=(% style="width: 50px;background-color:#4F81BD;color:white" %)**[bit5:bit2]**|=(% style="width: 91px; background-color: rgb(79, 129, 189); color: white;" %)**bit1**|=(% style="background-color: rgb(79, 129, 189); color: white; width: 88px;" %)**bit0**
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**
447 447  |(% 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" %)(((
448 448  Interrupt flag
449 449  )))
450 450  
451 451  * (((
452 -Each data entry is 11 bytes and has the same structure as [[Uplink Payload>>http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDS12-LB_LoRaWAN_LiDAR_ToF_Distance_Sensor_User_Manual/#H2.3.2UplinkPayload2CFPORT3D2]], to save airtime and battery, LDS12-LB will send max bytes according to the current DR and Frequency bands.
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.
453 453  )))
454 454  
455 455  For example, in the US915 band, the max payload for different DR is:
... ... @@ -498,7 +498,7 @@
498 498  [362,173,30,Low,False,2023-08-04 02:58:53],
499 499  
500 500  
501 -History read from serial port：
407 +**History read from serial port：**
502 502  
503 503  [[image:image-20230805145056-3.png]]
504 504  
... ... @@ -573,11 +573,8 @@
573 573  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.
574 574  )))
575 575  
576 -Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
577 577  
578 -[[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"]]
579 579  
580 -
581 581  === 2.5.2 Unix TimeStamp ===
582 582  
583 583  
... ... @@ -640,92 +640,8 @@
640 640  [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20Frequency%20Band/>>http://wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20Frequency%20Band/]]
641 641  
642 642  
643 -== 2.7 LiDAR ToF Measurement ==
546 +(% style="color:inherit; font-family:inherit; font-size:29px" %)3. Configure LDS12-LB
644 644  
645 -=== 2.7.1 Principle of Distance Measurement ===
646 -
647 -
648 -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.
649 -
650 -[[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"]]
651 -
652 -
653 -=== 2.7.2 Distance Measurement Characteristics ===
654 -
655 -
656 -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:
657 -
658 -[[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"]]
659 -
660 -
661 -(((
662 -(% style="color:blue" %)**① **(%%)Represents the detection blind zone of The LiDAR probe, 0-10cm, within which the output data is unreliable.
663 -)))
664 -
665 -(((
666 -(% style="color:blue" %)**② **(%%)Represents the operating range of The LiDAR probe detecting black target with 10% reflectivity, 0.1-5m.
667 -)))
668 -
669 -(((
670 -(% style="color:blue" %)**③ **(%%)Represents the operating range of The LiDAR probe detecting white target with 90% reflectivity, 0.1-12m.
671 -)))
672 -
673 -
674 -(((
675 -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:
676 -)))
677 -
678 -[[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"]]
679 -
680 -(((
681 -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.
682 -)))
683 -
684 -[[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"]]
685 -
686 -(((
687 -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.
688 -)))
689 -
690 -
691 -=== 2.7.3 Notice of usage ===
692 -
693 -
694 -Possible invalid /wrong reading for LiDAR ToF tech:
695 -
696 -* Measure high reflectivity object such as: Mirror, Smooth ceramic tile, static milk surface, will have possible wrong readings.
697 -* While there is transparent object such as glass, water drop between the measured object and the LiDAR sensor, the reading might be wrong.
698 -* The LiDAR probe is cover by dirty things; the reading might be wrong. In this case, need to clean the probe.
699 -* The sensor window is made by Acrylic. Don't touch it with alcohol material. This will destroy the sensor window.
700 -
701 -=== 2.7.4  Reflectivity of different objects ===
702 -
703 -
704 -(% border="1" cellspacing="5" style="background-color:#f2f2f2; width:379px" %)
705 -|=(% 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
706 -|(% style="width:53px" %)1|(% style="width:229px" %)Black foam rubber|(% style="width:93px" %)2.4%
707 -|(% style="width:53px" %)2|(% style="width:229px" %)Black fabric|(% style="width:93px" %)3%
708 -|(% style="width:53px" %)3|(% style="width:229px" %)Black rubber|(% style="width:93px" %)4%
709 -|(% style="width:53px" %)4|(% style="width:229px" %)Coal (different types of coal)|(% style="width:93px" %)4~~8%
710 -|(% style="width:53px" %)5|(% style="width:229px" %)Black car paint|(% style="width:93px" %)5%
711 -|(% style="width:53px" %)6|(% style="width:229px" %)Black Jam|(% style="width:93px" %)10%
712 -|(% style="width:53px" %)7|(% style="width:229px" %)Opaque black plastic|(% style="width:93px" %)14%
713 -|(% style="width:53px" %)8|(% style="width:229px" %)Clean rough board|(% style="width:93px" %)20%
714 -|(% style="width:53px" %)9|(% style="width:229px" %)Translucent plastic bottle|(% style="width:93px" %)62%
715 -|(% style="width:53px" %)10|(% style="width:229px" %)Carton cardboard|(% style="width:93px" %)68%
716 -|(% style="width:53px" %)11|(% style="width:229px" %)Clean pine|(% style="width:93px" %)70%
717 -|(% style="width:53px" %)12|(% style="width:229px" %)Opaque white plastic|(% style="width:93px" %)87%
718 -|(% style="width:53px" %)13|(% style="width:229px" %)White Jam|(% style="width:93px" %)90%
719 -|(% style="width:53px" %)14|(% style="width:229px" %)Kodak Standard Whiteboard|(% style="width:93px" %)100%
720 -|(% style="width:53px" %)15|(% style="width:229px" %)(((
721 -Unpolished white metal surface
722 -)))|(% style="width:93px" %)130%
723 -|(% style="width:53px" %)16|(% style="width:229px" %)Glossy light metal surface|(% style="width:93px" %)150%
724 -|(% style="width:53px" %)17|(% style="width:229px" %)stainless steel|(% style="width:93px" %)200%
725 -|(% style="width:53px" %)18|(% style="width:229px" %)Reflector plate, reflective tape|(% style="width:93px" %)>300%
726 -
727 -= 3. Configure LDS12-LB =
728 -
729 729  == 3.1 Configure Methods ==
730 730  
731 731  
... ... @@ -805,9 +805,9 @@
805 805  === 3.3.2 Set Interrupt Mode ===
806 806  
807 807  
808 -Feature, Set Interrupt mode for PA8 of pin.
627 +Feature, Set Interrupt mode for pin of GPIO_EXTI.
809 809  
810 -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.
811 811  
812 812  (% style="color:blue" %)**AT Command: AT+INTMOD**
813 813  
... ... @@ -818,7 +818,11 @@
818 818  OK
819 819  the mode is 0 =Disable Interrupt
820 820  )))
821 -|(% style="width:154px" %)AT+INTMOD=2|(% style="width:196px" %)(((
640 +|(% style="width:154px" %)(((
641 +AT+INTMOD=2
642 +
643 +(default)
644 +)))|(% style="width:196px" %)(((
822 822  Set Transmit Interval
823 823  0. (Disable Interrupt),
824 824  ~1. (Trigger by rising and falling edge)
... ... @@ -836,35 +836,7 @@
836 836  
837 837  * Example 2: Downlink Payload: 06000003  ~/~/  Set the interrupt mode to rising edge trigger
838 838  
839 -=== 3.3.3  Set Power Output Duration ===
840 840  
841 -Control the output duration 3V3(pin of VBAT_OUT) . Before each sampling, device will
842 -
843 -~1. first enable the power output to external sensor,
844 -
845 -2. keep it on as per duration, read sensor value and construct uplink payload
846 -
847 -3. final, close the power output.
848 -
849 -(% style="color:blue" %)**AT Command: AT+3V3T**
850 -
851 -(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
852 -|=(% 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**
853 -|(% style="width:154px" %)AT+3V3T=?|(% style="width:196px" %)Show 3V3 open time.|(% style="width:157px" %)0 (default)
854 -OK
855 -|(% style="width:154px" %)AT+3V3T=1000|(% style="width:196px" %)Close after a delay of 1000 milliseconds.|(% style="width:157px" %)OK
856 -|(% style="width:154px" %)AT+3V3T=0|(% style="width:196px" %)Always turn on the power supply of 3V3 pin.|(% style="width:157px" %)OK
857 -|(% style="width:154px" %)AT+3V3T=65535|(% style="width:196px" %)Always turn off the power supply of 3V3 pin.|(% style="width:157px" %)OK
858 -
859 -(% style="color:blue" %)**Downlink Command: 0x07**(%%)
860 -Format: Command Code (0x07) followed by 3 bytes.
861 -
862 -The first byte is 01,the second and third bytes are the time to turn on.
863 -
864 -* Example 1: Downlink Payload: 07 01 00 00  **~-~-->**  AT+3V3T=0
865 -* Example 2: Downlink Payload: 07 01 01 F4  **~-~-->**  AT+3V3T=500
866 -* Example 3: Downlink Payload: 07 01 FF FF  **~-~-->**  AT+3V3T=65535
867 -
868 868  = 4. Battery & Power Consumption =
869 869  
870 870  
... ... @@ -933,7 +933,7 @@
933 933  = 8. Order Info =
934 934  
935 935  
936 -Part Number: (% style="color:blue" %)**LDS12-LB-XXX**
731 +Part Number: (% style="color:blue" %)**DS20L-XXX**
937 937  
938 938  (% style="color:red" %)**XXX**(%%): **The default frequency band**
939 939  
... ... @@ -958,7 +958,7 @@
958 958  
959 959  (% style="color:#037691" %)**Package Includes**:
960 960  
961 -* LDS12-LB LoRaWAN LiDAR ToF Distance Sensor x 1
756 +* DS20L LoRaWAN Smart Distance Detector x 1
962 962  
963 963  (% style="color:#037691" %)**Dimension and weight**:
964 964  
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