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edited by Xiaoling
on 2022/06/10 11:12
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edited by Xiaoling
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Summary

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... ... @@ -363,138 +363,16 @@
363 363  
364 364  
365 365  
366 -== 2.6 Installation and Maintain ==
366 +== 2.6  Frequency Plans ==
367 367  
368 -=== 2.6.1 Before measurement ===
369 -
370 370  (((
371 -(((
372 -If the LSPH01 has more than 7 days not use or just clean the pH probe. User should put the probe inside pure water for more than 24 hours for activation. If no put in water, user need to put inside soil for more than 24 hours to ensure the measurement accuracy. 
369 +The LLDS12 uses OTAA mode and below frequency plans by default. If user want to use it with different frequency plan, please refer the AT command sets.
373 373  )))
374 -)))
375 375  
376 376  
373 +=== 2.6.1  EU863-870 (EU868) ===
377 377  
378 -=== 2.6.2 Measurement ===
379 -
380 -
381 381  (((
382 -(% style="color:#4f81bd" %)**Measurement the soil surface:**
383 -)))
384 -
385 -(((
386 -[[image:1654592946732-634.png]]
387 -)))
388 -
389 -(((
390 -Choose the proper measuring position. Split the surface soil according to the measured deep.
391 -)))
392 -
393 -(((
394 -Put pure water, or rainwater to make the soil of measurement point to moist mud. Remove rocks or hard things.
395 -)))
396 -
397 -(((
398 -Slowly insert the probe to the measure point. Don’t use large force which will break the probe. Make sure not shake when inserting.
399 -)))
400 -
401 -(((
402 -Put soil over the probe after insert. And start to measure.
403 -)))
404 -
405 -(((
406 -
407 -)))
408 -
409 -(((
410 -(% style="color:#4f81bd" %)**Measurement inside soil:**
411 -)))
412 -
413 -(((
414 -Dig a hole with diameter > 20CM.
415 -)))
416 -
417 -(((
418 -Insert the probe inside, method like measure the surface.
419 -)))
420 -
421 -
422 -
423 -=== 2.6.3 Maintain Probe ===
424 -
425 -1. (((
426 -pH probe electrode is fragile and no strong. User must avoid strong force or hitting it.
427 -)))
428 -1. (((
429 -After long time use (3~~ 6  months). The probe electrode needs to be clean; user can use high grade sandpaper to polish it or put in 5% hydrochloric acid for several minutes. After the metal probe looks like new, user can use pure water to wash it.
430 -)))
431 -1. (((
432 -Probe reference electrode is also no strong, need to avoid strong force or hitting.
433 -)))
434 -1. (((
435 -User should keep reference electrode wet while not use.
436 -)))
437 -1. (((
438 -Avoid the probes to touch oily matter. Which will cause issue in accuracy.
439 -)))
440 -1. (((
441 -The probe is IP68 can be put in water.
442 -
443 -
444 -
445 -)))
446 -
447 -== 2.7 Calibration ==
448 -
449 -(((
450 -User can do calibration for the probe. It is limited to use below pH buffer solution to calibrate: 4.00, 6.86, 9.18. When calibration, user need to clean the electrode and put the probe in the pH buffer solution to wait the value stable ( a new clean electrode might need max 24 hours to be stable).
451 -)))
452 -
453 -(((
454 -After stable, user can use below command to calibrate.
455 -)))
456 -
457 -[[image:image-20220607171149-4.png]]
458 -
459 -
460 -(% style="color:#037691" %)**Calibration Payload**
461 -
462 -(% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
463 -|=(% style="width: 62.5px;" %)(((
464 -**Size (bytes)**
465 -)))|=(% style="width: 89px;" %)**1**|=(% style="width: 89px;" %)**1**|=(% style="width: 89px;" %)**1**|=(% style="width: 89px;" %)**7**|=(% style="width: 89px;" %)**1**
466 -|**Value**|(((
467 -PH4
468 -
469 -Calibrate value
470 -)))|PH6.86 Calibrate value|(((
471 -PH9.18
472 -
473 -Calibrate value
474 -)))|Reserve|(((
475 -[[Message Type>>||anchor="H2.3.6MessageType"]]
476 -
477 -Always 0x03
478 -)))
479 -
480 -User can also send 0x14 downlink command to poll the current calibration payload.
481 -
482 -[[image:image-20220607171416-7.jpeg]]
483 -
484 -
485 -* Reply to the confirmation package: 14 01
486 -* Reply to non-confirmed packet: 14 00
487 -
488 -== 2.8 Frequency Plans ==
489 -
490 -(((
491 -The LSPH01 uses OTAA mode and below frequency plans by default. If user want to use it with different frequency plan, please refer the AT command sets.
492 -)))
493 -
494 -
495 -=== 2.8.1 EU863-870 (EU868) ===
496 -
497 -(((
498 498  (% style="color:blue" %)**Uplink:**
499 499  )))
500 500  
... ... @@ -552,7 +552,7 @@
552 552  
553 553  
554 554  
555 -=== 2.8.2 US902-928(US915) ===
433 +=== 2.6.2  US902-928(US915) ===
556 556  
557 557  (((
558 558  Used in USA, Canada and South America. Frequency band as per definition in LoRaWAN 1.0.3 Regional document.
... ... @@ -569,8 +569,9 @@
569 569  * Check what sub-band the LoRaWAN server ask from the OTAA Join Accept message and switch to that sub-band
570 570  * Use the Join successful sub-band if the server doesn’t include sub-band info in the OTAA Join Accept message ( TTN v2 doesn't include)
571 571  
572 -=== 2.8.3 CN470-510 (CN470) ===
573 573  
451 +=== 2.6.3 CN470-510 (CN470) ===
452 +
574 574  (((
575 575  Used in China, Default use CHE=1
576 576  )))
... ... @@ -657,8 +657,9 @@
657 657  
658 658  
659 659  
660 -=== 2.8.4 AU915-928(AU915) ===
661 661  
540 +=== 2.6.4 AU915-928(AU915) ===
541 +
662 662  (((
663 663  Frequency band as per definition in LoRaWAN 1.0.3 Regional document.
664 664  )))
... ... @@ -678,7 +678,7 @@
678 678  * Check what sub-band the LoRaWAN server ask from the OTAA Join Accept message and switch to that sub-band
679 679  * Use the Join successful sub-band if the server doesn’t include sub-band info in the OTAA Join Accept message ( TTN v2 doesn't include)
680 680  
681 -=== 2.8.5 AS920-923 & AS923-925 (AS923) ===
561 +=== 2.6.5 AS920-923 & AS923-925 (AS923) ===
682 682  
683 683  (((
684 684  (% style="color:blue" %)**Default Uplink channel:**
... ... @@ -786,8 +786,9 @@
786 786  
787 787  
788 788  
789 -=== 2.8.6 KR920-923 (KR920) ===
790 790  
670 +=== 2.6.6 KR920-923 (KR920) ===
671 +
791 791  (((
792 792  (% style="color:blue" %)**Default channel:**
793 793  )))
... ... @@ -858,8 +858,9 @@
858 858  
859 859  
860 860  
861 -=== 2.8.7 IN865-867 (IN865) ===
862 862  
743 +=== 2.6.7 IN865-867 (IN865) ===
744 +
863 863  (((
864 864  (% style="color:blue" %)**Uplink:**
865 865  )))
... ... @@ -894,25 +894,74 @@
894 894  
895 895  
896 896  
897 -== 2.9 LED Indicator ==
898 898  
899 -The LSPH01 has an internal LED which is to show the status of different state.
780 +== 2.7  LED Indicator ==
900 900  
782 +The LLDS12 has an internal LED which is to show the status of different state.
783 +
901 901  * The sensor is detected when the device is turned on, and it will flash 4 times quickly when it is detected.
902 902  * Blink once when device transmit a packet.
903 903  
904 -== 2.10 ​Firmware Change Log ==
905 905  
906 906  
907 -**Firmware download link:**
789 +== 2.8  ​Firmware Change Log ==
908 908  
909 -[[http:~~/~~/www.dragino.com/downloads/index.pHp?dir=LoRa_End_Node/LSPH01/Firmware/>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LSE01/Firmware/]]
910 910  
792 +**Firmware download link: **[[http:~~/~~/www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LLDS12/Firmware/>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LLDS12/Firmware/]]
911 911  
794 +
912 912  **Firmware Upgrade Method: **[[Firmware Upgrade Instruction>>path:/xwiki/bin/view/Main/Firmware%20Upgrade%20Instruction%20for%20STM32%20base%20products/]]
913 913  
914 914  
915 915  
799 += 3.  LiDAR ToF Measurement =
800 +
801 +== 3.1 Principle of Distance Measurement ==
802 +
803 +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.
804 +
805 +[[image:1654831757579-263.png]]
806 +
807 +
808 +
809 +== 3.2 Distance Measurement Characteristics ==
810 +
811 +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:
812 +
813 +[[image:1654831774373-275.png]]
814 +
815 +
816 +①Represents the detection blind zone of The LiDAR probe, 0-10cm, within which the output data is unreliable.
817 +
818 +②Represents the operating range of The LiDAR probe detecting black target with 10% reflectivity, 0.1-5m.
819 +
820 +③Represents the operating range of The LiDAR probe detecting white target with 90% reflectivity, 0.1-12m.
821 +
822 +
823 +Vertical Coordinates: Represents the radius of light spot for The LiDAR probe at the 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:
824 +
825 +
826 +[[image:1654831797521-720.png]]
827 +
828 +
829 +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.
830 +
831 +[[image:1654831810009-716.png]]
832 +
833 +
834 +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.
835 +
836 +
837 +
838 +== 3.3 Notice of usage: ==
839 +
840 +Possible invalid /wrong reading for LiDAR ToF tech:
841 +
842 +* Measure high reflectivity object such as: Mirror, Smooth ceramic tile, static milk surface, will have possible wrong readings.
843 +* While there is transparent object such as glass, water drop between the measured object and the LiDAR sensor, the reading might wrong.
844 +* The LiDAR probe is cover by dirty things; the reading might be wrong. In this case, need to clean the probe.
845 +* The sensor window is made by Acrylic. Don’t touch it with alcohol material. This will destroy the sensor window.
846 +
916 916  = 4.  Configure LLDS12 via AT Command or LoRaWAN Downlink =
917 917  
918 918  (((
... ... @@ -1027,8 +1027,6 @@
1027 1027  Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
1028 1028  )))
1029 1029  
1030 -
1031 -
1032 1032  == 4.3  Get Firmware Version Info ==
1033 1033  
1034 1034  Feature: use downlink to get firmware version.
... ... @@ -1040,7 +1040,6 @@
1040 1040  * Reply to the confirmation package: 26 01
1041 1041  * Reply to non-confirmed packet: 26 00
1042 1042  
1043 -
1044 1044  Device will send an uplink after got this downlink command. With below payload:
1045 1045  
1046 1046  Configures info payload:
... ... @@ -1062,7 +1062,7 @@
1062 1062  Always 0x02
1063 1063  )))
1064 1064  
1065 -**Software Type**: Always 0x03 for LSPH01
993 +**Software Type**: Always 0x03 for LLDS12
1066 1066  
1067 1067  
1068 1068  **Frequency Band**:
... ... @@ -1108,7 +1108,7 @@
1108 1108  
1109 1109  0x06: LSNPK01
1110 1110  
1111 -0x07: LDDS12
1039 +0x07: LLDS12
1112 1112  
1113 1113  
1114 1114  
... ... @@ -1293,7 +1293,6 @@
1293 1293  * (% style="color:red" %)**IN865**(%%):  LoRaWAN IN865 band
1294 1294  * (% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
1295 1295  
1296 -
1297 1297  = 10. ​ Packing Info =
1298 1298  
1299 1299  
... ... @@ -1308,7 +1308,6 @@
1308 1308  * Package Size / pcs : cm
1309 1309  * Weight / pcs : g
1310 1310  
1311 -
1312 1312  = 11.  ​Support =
1313 1313  
1314 1314  * 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.
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