Changes for page DS20L -- LoRaWAN Smart Distance Detector User Manual 01
Last modified by Mengting Qiu on 2023/12/14 11:15
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... ... @@ -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" %)Relectivity565 +|=(% 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% ... ... @@ -585,6 +585,9 @@ 585 585 |(% style="width:53px" %)17|(% style="width:229px" %)stainless steel|(% style="width:93px" %)200% 586 586 |(% style="width:53px" %)18|(% style="width:229px" %)Reflector plate, reflective tape|(% style="width:93px" %)>300% 587 587 587 + 588 + 589 + 588 588 = 3. Configure LDS12-LB = 589 589 590 590 == 3.1 Configure Methods == ... ... @@ -598,6 +598,9 @@ 598 598 599 599 * LoRaWAN Downlink. Instruction for different platforms: See [[IoT LoRaWAN Server>>http://wiki.dragino.com/xwiki/bin/view/Main/]] section. 600 600 603 + 604 + 605 + 601 601 == 3.2 General Commands == 602 602 603 603 ... ... @@ -630,7 +630,7 @@ 630 630 ))) 631 631 632 632 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %) 633 -|=(% style="width: 156px;background-color:# D9E2F3;#0070c0" %)**Command Example**|=(% style="width: 137px;background-color:#D9E2F3;#0070c0" %)**Function**|=(% style="background-color:#D9E2F3;#0070c0" %)**Response**638 +|=(% 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** 634 634 |(% style="width:156px" %)AT+TDC=?|(% style="width:137px" %)Show current transmit Interval|((( 635 635 30000 636 636 OK ... ... @@ -670,7 +670,7 @@ 670 670 (% style="color:blue" %)**AT Command: AT+INTMOD** 671 671 672 672 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %) 673 -|=(% 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**678 +|=(% 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** 674 674 |(% style="width:154px" %)AT+INTMOD=?|(% style="width:196px" %)Show current interrupt mode|(% style="width:157px" %)((( 675 675 0 676 676 OK ... ... @@ -695,6 +695,9 @@ 695 695 * Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger 696 696 697 697 703 + 704 + 705 + 698 698 === 3.3.3 Get Firmware Version Info === 699 699 700 700 ... ... @@ -703,7 +703,7 @@ 703 703 (% style="color:#037691" %)**Downlink Command: 0x26** 704 704 705 705 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:492px" %) 706 -|(% style="background-color:# d9e2f3;#0070c0; width:191px" %)**Downlink Control Type**|(% style="background-color:#d9e2f3;#0070c0; width:57px" %)**FPort**|(% style="background-color:#d9e2f3;#0070c0; width:91px" %)**Type Code**|(% style="background-color:#d9e2f3;#0070c0; width:153px" %)**Downlink payload size(bytes)**714 +|(% style="background-color:#4F81BD;color:white; width:191px" %)**Downlink Control Type**|(% style="background-color:#4F81BD;color:white; width:57px" %)**FPort**|(% style="background-color:#4F81BD;color:white; width:91px" %)**Type Code**|(% style="background-color:#4F81BD;color:white; width:153px" %)**Downlink payload size(bytes)** 707 707 |(% style="width:191px" %)Get Firmware Version Info|(% style="width:57px" %)Any|(% style="width:91px" %)26|(% style="width:151px" %)2 708 708 709 709 * Reply to the confirmation package: 26 01