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Title
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1 -LDDS75 - LoRaWAN Distance Detection Sensor User Manual
1 +LLDS12-LoRaWAN LiDAR ToF Distance Sensor User Manual
Content
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1 1  (% style="text-align:center" %)
2 -[[image:1654846127817-788.png]]
2 +[[image:image-20220610095606-1.png]]
3 3  
4 +
4 4  **Contents:**
5 5  
7 +{{toc/}}
6 6  
7 7  
8 8  
... ... @@ -12,28 +12,33 @@
12 12  
13 13  = 1.  Introduction =
14 14  
15 -== 1.1 ​ What is LoRaWAN Distance Detection Sensor ==
17 +== 1.1 ​ What is LoRaWAN LiDAR ToF Distance Sensor ==
16 16  
17 17  (((
18 18  
19 19  
20 20  (((
21 -The Dragino LDDS75 is a (% style="color:#4472c4" %)** LoRaWAN Distance Detection Sensor**(%%) for Internet of Things solution. It is used to measure the distance between the sensor and a flat object. The distance detection sensor is a module that uses (% style="color:#4472c4" %)** ultrasonic sensing** (%%)technology for distance measurement, and (% style="color:#4472c4" %)** temperature compensation**(%%) is performed internally to improve the reliability of data. The LDDS75 can be applied to scenarios such as horizontal distance measurement, liquid level measurement, parking management system, object proximity and presence detection, intelligent trash can management system, robot obstacle avoidance, automatic control, sewer, bottom water level monitoring, etc.
23 +The Dragino LLDS12 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.
24 +)))
22 22  
26 +(((
27 +The LLDS12 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.
28 +)))
23 23  
24 -It detects the distance** (% style="color:#4472c4" %) between the measured object and the sensor(%%)**, and uploads the value via wireless to LoRaWAN IoT Server.
30 +(((
31 +It detects the distance between the measured object and the sensor, and uploads the value via wireless to LoRaWAN IoT Server.
32 +)))
25 25  
34 +(((
35 +The LoRa wireless technology used in LLDS12 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.
36 +)))
26 26  
27 -The LoRa wireless technology used in LDDS75 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.
38 +(((
39 +LLDS12 is powered by (% style="color:blue" %)**8500mAh Li-SOCI2 battery**(%%), it is designed for long term use up to 5 years.
40 +)))
28 28  
29 -
30 -LDDS75 is powered by (% style="color:#4472c4" %)** 4000mA or 8500mAh Li-SOCI2 battery**(%%); It is designed for long term use up to 10 years*.
31 -
32 -
33 -Each LDDS75 pre-loads with a set of unique keys for LoRaWAN registrations, register these keys to local LoRaWAN server and it will auto connect if there is network coverage, after power on.
34 -
35 -
36 -(% style="color:#4472c4" %) ***** (%%)Actually lifetime depends on network coverage and uplink interval and other factors
42 +(((
43 +Each LLDS12 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 38  )))
39 39  
... ... @@ -461,6 +461,7 @@
461 461  * Check what sub-band the LoRaWAN server ask from the OTAA Join Accept message and switch to that sub-band
462 462  * 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)
463 463  
471 +
464 464  === 2.6.3  CN470-510 (CN470) ===
465 465  
466 466  (((
... ... @@ -571,6 +571,7 @@
571 571  * Check what sub-band the LoRaWAN server ask from the OTAA Join Accept message and switch to that sub-band
572 572  * 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)
573 573  
582 +
574 574  === 2.6.5  AS920-923 & AS923-925 (AS923) ===
575 575  
576 576  (((
... ... @@ -824,37 +824,25 @@
824 824  [[image:1654831774373-275.png]]
825 825  
826 826  
827 -(((
828 -(% style="color:blue" %)**① **(%%)Represents the detection blind zone of The LiDAR probe, 0-10cm, within which the output data is unreliable.
829 -)))
836 +①Represents the detection blind zone of The LiDAR probe, 0-10cm, within which the output data is unreliable.
830 830  
831 -(((
832 -(% style="color:blue" %)**② **(%%)Represents the operating range of The LiDAR probe detecting black target with 10% reflectivity, 0.1-5m.
833 -)))
838 +②Represents the operating range of The LiDAR probe detecting black target with 10% reflectivity, 0.1-5m.
834 834  
835 -(((
836 -(% style="color:blue" %)**③ **(%%)Represents the operating range of The LiDAR probe detecting white target with 90% reflectivity, 0.1-12m.
837 -)))
840 +③Represents the operating range of The LiDAR probe detecting white target with 90% reflectivity, 0.1-12m.
838 838  
839 839  
840 -(((
841 841  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:
842 -)))
843 843  
844 844  
845 845  [[image:1654831797521-720.png]]
846 846  
847 847  
848 -(((
849 849  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.
850 -)))
851 851  
852 852  [[image:1654831810009-716.png]]
853 853  
854 854  
855 -(((
856 856  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.
857 -)))
858 858  
859 859  
860 860  
... ... @@ -867,81 +867,56 @@
867 867  * The LiDAR probe is cover by dirty things; the reading might be wrong. In this case, need to clean the probe.
868 868  * The sensor window is made by Acrylic. Don’t touch it with alcohol material. This will destroy the sensor window.
869 869  
867 +
870 870  = 4.  Configure LLDS12 via AT Command or LoRaWAN Downlink =
871 871  
872 872  (((
873 -(((
874 874  Use can configure LLDS12 via AT Command or LoRaWAN Downlink.
875 875  )))
876 -)))
877 877  
878 878  * (((
879 -(((
880 880  AT Command Connection: See [[FAQ>>||anchor="H7.A0FAQ"]].
881 881  )))
882 -)))
883 883  * (((
884 -(((
885 885  LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
886 886  )))
887 -)))
888 888  
889 889  (((
890 -(((
891 891  
892 -)))
893 893  
894 -(((
895 895  There are two kinds of commands to configure LLDS12, they are:
896 896  )))
897 -)))
898 898  
899 899  * (((
900 -(((
901 901  (% style="color:#4f81bd" %)** General Commands**.
902 902  )))
903 -)))
904 904  
905 905  (((
906 -(((
907 907  These commands are to configure:
908 908  )))
909 -)))
910 910  
911 911  * (((
912 -(((
913 913  General system settings like: uplink interval.
914 914  )))
915 -)))
916 916  * (((
917 -(((
918 918  LoRaWAN protocol & radio related command.
919 919  )))
920 -)))
921 921  
922 922  (((
923 -(((
924 924  They are same for all Dragino Device which support DLWS-005 LoRaWAN Stack. These commands can be found on the wiki: [[End Device AT Commands and Downlink Command>>doc:Main.End Device AT Commands and Downlink Command.WebHome]]
925 925  )))
926 -)))
927 927  
928 928  (((
929 -(((
930 930  
931 931  )))
932 -)))
933 933  
934 934  * (((
935 -(((
936 936  (% style="color:#4f81bd" %)** Commands special design for LLDS12**
937 937  )))
938 -)))
939 939  
940 940  (((
941 -(((
942 942  These commands only valid for LLDS12, as below:
943 943  )))
944 -)))
945 945  
946 946  
947 947  
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954 954  [[image:image-20220607171554-8.png]]
955 955  
956 956  
929 +
957 957  (((
958 958  (% style="color:#037691" %)**Downlink Command: 0x01**
959 959  )))
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971 971  )))
972 972  * (((
973 973  Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
947 +
948 +
949 +
974 974  )))
975 975  
976 976  == 4.2  Set Interrupt Mode ==
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1001 1001  Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
1002 1002  )))
1003 1003  
980 +
981 +
1004 1004  == 4.3  Get Firmware Version Info ==
1005 1005  
1006 1006  Feature: use downlink to get firmware version.
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1197 1197  
1198 1198  
1199 1199  (((
1200 -(((
1201 1201  In the PC, you need to set the serial baud rate to (% style="color:green" %)**9600**(%%) to access the serial console for LLDS12.
1202 -)))
1203 1203  
1204 -(((
1205 1205  LLDS12 will output system info once power on as below:
1206 1206  )))
1207 -)))
1208 1208  
1209 1209  
1210 1210   [[image:1654593712276-618.png]]
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1216 1216  
1217 1217  == 7.1  How to change the LoRa Frequency Bands/Region ==
1218 1218  
1219 -You can follow the instructions for [[how to upgrade image>>||anchor="H2.8A0200BFirmwareChangeLog"]].
1193 +You can follow the instructions for [[how to upgrade image>>||anchor="H2.10200BFirmwareChangeLog"]].
1220 1220  When downloading the images, choose the required image file for download. ​
1221 1221  
1222 1222  
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1225 1225  == 8.1  AT Commands input doesn’t work ==
1226 1226  
1227 1227  
1228 -(((
1229 1229  In the case if user can see the console output but can’t type input to the device. Please check if you already include the (% style="color:green" %)**ENTER**(%%) while sending out the command. Some serial tool doesn’t send (% style="color:green" %)**ENTER**(%%) while press the send key, user need to add ENTER in their string.
1230 -)))
1231 1231  
1232 1232  
1233 1233  == 8.2  Significant error between the output distant value of LiDAR and actual distance ==
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1272 1272  * (% style="color:red" %)**IN865**(%%):  LoRaWAN IN865 band
1273 1273  * (% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
1274 1274  
1275 -
1276 1276  = 10. ​ Packing Info =
1277 1277  
1278 1278  
... ... @@ -1287,7 +1287,6 @@
1287 1287  * Package Size / pcs : cm
1288 1288  * Weight / pcs : g
1289 1289  
1290 -
1291 1291  = 11.  ​Support =
1292 1292  
1293 1293  * 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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