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Last modified by Mengting Qiu on 2023/12/14 11:15
From version 82.14
edited by Xiaoling
on 2023/06/14 17:09
Change comment: There is no comment for this version
To version 82.15
edited by Xiaoling
on 2023/06/14 17:13
Change comment: There is no comment for this version

Summary

Details

Page properties
Content
... ... @@ -249,7 +249,6 @@
249 249  Uplink payload includes in total 11 bytes.
250 250  )))
251 251  
252 -
253 253  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
254 254  |=(% style="width: 62.5px;background-color:#4F81BD;color:white" %)(((
255 255  **Size(bytes)**
... ... @@ -353,7 +353,6 @@
353 353  |(% style="width:160px" %)0x02|(% style="width:163px" %)Reply configures info|(% style="width:173px" %)[[Configure Info Payload>>||anchor="H3.ConfigureLDS12-LB"]]
354 354  
355 355  
356 -
357 357  === 2.3.8 Decode payload in The Things Network ===
358 358  
359 359  
... ... @@ -504,16 +504,15 @@
504 504  
505 505  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.
506 506  
505 +[[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"]]
507 507  
508 -[[image:1654831757579-263.png]]
509 509  
510 -
511 511  === 2.8.2 Distance Measurement Characteristics ===
512 512  
513 513  
514 514  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:
515 515  
516 -[[image:1654831774373-275.png]]
513 +[[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"]]
517 517  
518 518  
519 519  (((
... ... @@ -534,7 +534,7 @@
534 534  )))
535 535  
536 536  
537 -[[image:1654831797521-720.png]]
534 +[[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"]]
538 538  
539 539  
540 540  (((
... ... @@ -541,15 +541,14 @@
541 541  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.
542 542  )))
543 543  
544 -[[image:1654831810009-716.png]]
541 +[[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"]]
545 545  
546 -
547 547  (((
548 548  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.
549 549  )))
550 550  
551 551  
552 -=== 2.8.3 Notice of usage: ===
548 +=== 2.8.3 Notice of usage ===
553 553  
554 554  
555 555  Possible invalid /wrong reading for LiDAR ToF tech:
... ... @@ -559,11 +559,14 @@
559 559  * The LiDAR probe is cover by dirty things; the reading might be wrong. In this case, need to clean the probe.
560 560  * The sensor window is made by Acrylic. Don't touch it with alcohol material. This will destroy the sensor window.
561 561  
558 +
559 +
560 +
562 562  === 2.8.4  Reflectivity of different objects ===
563 563  
564 564  
565 565  (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:379px" %)
566 -|=(% style="width: 54px;background-color:#D9E2F3;color:#0070C0" %)Item|=(% style="width: 231px;background-color:#D9E2F3;color:#0070C0" %)Material|=(% style="width: 94px;background-color:#D9E2F3;color:#0070C0" %)Relectivity
565 +|=(% 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
567 567  |(% style="width:53px" %)1|(% style="width:229px" %)Black foam rubber|(% style="width:93px" %)2.4%
568 568  |(% style="width:53px" %)2|(% style="width:229px" %)Black fabric|(% style="width:93px" %)3%
569 569  |(% style="width:53px" %)3|(% style="width:229px" %)Black rubber|(% style="width:93px" %)4%
... ... @@ -694,7 +694,6 @@
694 694  
695 695  * Example 2: Downlink Payload: 06000003  ~/~/  Set the interrupt mode to rising edge trigger
696 696  
697 -
698 698  === 3.3.3 Get Firmware Version Info ===
699 699  
700 700