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Title
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1 -LLDS12-LoRaWAN LiDAR ToF Distance Sensor User Manual
1 +LDDS75 - LoRaWAN Distance Detection Sensor User Manual
Content
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1 1  (% style="text-align:center" %)
2 -[[image:image-20220610095606-1.png]]
2 +[[image:1654846127817-788.png]]
3 3  
4 -
5 5  **Contents:**
6 6  
7 -{{toc/}}
8 8  
9 9  
10 10  
... ... @@ -14,33 +14,28 @@
14 14  
15 15  = 1.  Introduction =
16 16  
17 -== 1.1 ​ What is LoRaWAN LiDAR ToF Distance Sensor ==
15 +== 1.1 ​ What is LoRaWAN Distance Detection Sensor ==
18 18  
19 19  (((
20 20  
21 21  
22 22  (((
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 -)))
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.
25 25  
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 -)))
29 29  
30 -(((
31 -It detects the distance between the measured object and the sensor, and uploads the value via wireless to LoRaWAN IoT Server.
32 -)))
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.
33 33  
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 -)))
37 37  
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 -)))
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.
41 41  
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.
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
44 44  )))
45 45  )))
46 46  
... ... @@ -831,25 +831,37 @@
831 831  [[image:1654831774373-275.png]]
832 832  
833 833  
827 +(((
834 834  (% style="color:blue" %)**① **(%%)Represents the detection blind zone of The LiDAR probe, 0-10cm, within which the output data is unreliable.
829 +)))
835 835  
831 +(((
836 836  (% style="color:blue" %)**② **(%%)Represents the operating range of The LiDAR probe detecting black target with 10% reflectivity, 0.1-5m.
833 +)))
837 837  
835 +(((
838 838  (% style="color:blue" %)**③ **(%%)Represents the operating range of The LiDAR probe detecting white target with 90% reflectivity, 0.1-12m.
837 +)))
839 839  
840 840  
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 +)))
842 842  
843 843  
844 844  [[image:1654831797521-720.png]]
845 845  
846 846  
848 +(((
847 847  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 +)))
848 848  
849 849  [[image:1654831810009-716.png]]
850 850  
851 851  
855 +(((
852 852  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 +)))
853 853  
854 854  
855 855  
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862 862  * The LiDAR probe is cover by dirty things; the reading might be wrong. In this case, need to clean the probe.
863 863  * The sensor window is made by Acrylic. Don’t touch it with alcohol material. This will destroy the sensor window.
864 864  
865 -
866 -
867 867  = 4.  Configure LLDS12 via AT Command or LoRaWAN Downlink =
868 868  
869 869  (((
873 +(((
870 870  Use can configure LLDS12 via AT Command or LoRaWAN Downlink.
871 871  )))
876 +)))
872 872  
873 873  * (((
879 +(((
874 874  AT Command Connection: See [[FAQ>>||anchor="H7.A0FAQ"]].
875 875  )))
882 +)))
876 876  * (((
884 +(((
877 877  LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
878 878  )))
887 +)))
879 879  
880 880  (((
890 +(((
881 881  
892 +)))
882 882  
894 +(((
883 883  There are two kinds of commands to configure LLDS12, they are:
884 884  )))
897 +)))
885 885  
886 886  * (((
900 +(((
887 887  (% style="color:#4f81bd" %)** General Commands**.
888 888  )))
903 +)))
889 889  
890 890  (((
906 +(((
891 891  These commands are to configure:
892 892  )))
909 +)))
893 893  
894 894  * (((
912 +(((
895 895  General system settings like: uplink interval.
896 896  )))
915 +)))
897 897  * (((
917 +(((
898 898  LoRaWAN protocol & radio related command.
899 899  )))
920 +)))
900 900  
901 901  (((
923 +(((
902 902  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]]
903 903  )))
926 +)))
904 904  
905 905  (((
929 +(((
906 906  
907 907  )))
932 +)))
908 908  
909 909  * (((
935 +(((
910 910  (% style="color:#4f81bd" %)** Commands special design for LLDS12**
911 911  )))
938 +)))
912 912  
913 913  (((
941 +(((
914 914  These commands only valid for LLDS12, as below:
915 915  )))
944 +)))
916 916  
917 917  
918 918  
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925 925  [[image:image-20220607171554-8.png]]
926 926  
927 927  
928 -
929 929  (((
930 930  (% style="color:#037691" %)**Downlink Command: 0x01**
931 931  )))
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943 943  )))
944 944  * (((
945 945  Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
946 -
947 -
948 -
949 949  )))
950 950  
951 951  == 4.2  Set Interrupt Mode ==
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1172 1172  
1173 1173  
1174 1174  (((
1200 +(((
1175 1175  In the PC, you need to set the serial baud rate to (% style="color:green" %)**9600**(%%) to access the serial console for LLDS12.
1202 +)))
1176 1176  
1204 +(((
1177 1177  LLDS12 will output system info once power on as below:
1178 1178  )))
1207 +)))
1179 1179  
1180 1180  
1181 1181   [[image:1654593712276-618.png]]
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1196 1196  == 8.1  AT Commands input doesn’t work ==
1197 1197  
1198 1198  
1228 +(((
1199 1199  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 +)))
1200 1200  
1201 1201  
1202 1202  == 8.2  Significant error between the output distant value of LiDAR and actual distance ==
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1241 1241  * (% style="color:red" %)**IN865**(%%):  LoRaWAN IN865 band
1242 1242  * (% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
1243 1243  
1275 +
1244 1244  = 10. ​ Packing Info =
1245 1245  
1246 1246  
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1255 1255  * Package Size / pcs : cm
1256 1256  * Weight / pcs : g
1257 1257  
1290 +
1258 1258  = 11.  ​Support =
1259 1259  
1260 1260  * 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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