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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
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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
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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	(((
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797	797	* The sensor is detected when the device is turned on, and it will flash 4 times quickly when it is detected.
798	798	* Blink once when device transmit a packet.
799	799
800		-
801	801	== 2.8  ​Firmware Change Log ==
802	802
803	803
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825	825	[[image:1654831774373-275.png]]
826	826
827	827
828		-(((
829		-(% style="color:blue" %)**① **(%%)Represents the detection blind zone of The LiDAR probe, 0-10cm, within which the output data is unreliable.
830		-)))
	836	+①Represents the detection blind zone of The LiDAR probe, 0-10cm, within which the output data is unreliable.
831	831
832		-(((
833		-(% style="color:blue" %)**② **(%%)Represents the operating range of The LiDAR probe detecting black target with 10% reflectivity, 0.1-5m.
834		-)))
	838	+②Represents the operating range of The LiDAR probe detecting black target with 10% reflectivity, 0.1-5m.
835	835
836		-(((
837		-(% style="color:blue" %)**③ **(%%)Represents the operating range of The LiDAR probe detecting white target with 90% reflectivity, 0.1-12m.
838		-)))
	840	+③Represents the operating range of The LiDAR probe detecting white target with 90% reflectivity, 0.1-12m.
839	839
840	840
841		-(((
842	842	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:
843		-)))
844	844
845	845
846	846	[[image:1654831797521-720.png]]
847	847
848	848
849		-(((
850	850	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.
851		-)))
852	852
853	853	[[image:1654831810009-716.png]]
854	854
855	855
856		-(((
857	857	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.
858		-)))
859	859
860	860
861	861
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868	868	* The LiDAR probe is cover by dirty things; the reading might be wrong. In this case, need to clean the probe.
869	869	* The sensor window is made by Acrylic. Don’t touch it with alcohol material. This will destroy the sensor window.
870	870
	867	+
871	871	= 4.  Configure LLDS12 via AT Command or LoRaWAN Downlink =
872	872
873	873	(((
874		-(((
875	875	Use can configure LLDS12 via AT Command or LoRaWAN Downlink.
876	876	)))
877		-)))
878	878
879	879	* (((
880		-(((
881	881	AT Command Connection: See [[FAQ>>||anchor="H7.A0FAQ"]].
882	882	)))
883		-)))
884	884	* (((
885		-(((
886	886	LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
887	887	)))
888		-)))
889	889
890	890	(((
891		-(((
892	892
893		-)))
894	894
895		-(((
896	896	There are two kinds of commands to configure LLDS12, they are:
897	897	)))
898		-)))
899	899
900	900	* (((
901		-(((
902	902	(% style="color:#4f81bd" %)** General Commands**.
903	903	)))
904		-)))
905	905
906	906	(((
907		-(((
908	908	These commands are to configure:
909	909	)))
910		-)))
911	911
912	912	* (((
913		-(((
914	914	General system settings like: uplink interval.
915	915	)))
916		-)))
917	917	* (((
918		-(((
919	919	LoRaWAN protocol & radio related command.
920	920	)))
921		-)))
922	922
923	923	(((
924		-(((
925	925	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]]
926	926	)))
927		-)))
928	928
929	929	(((
930		-(((
931	931
932	932	)))
933		-)))
934	934
935	935	* (((
936		-(((
937	937	(% style="color:#4f81bd" %)** Commands special design for LLDS12**
938	938	)))
939		-)))
940	940
941	941	(((
942		-(((
943	943	These commands only valid for LLDS12, as below:
944	944	)))
945		-)))
946	946
947	947
948	948
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955	955	[[image:image-20220607171554-8.png]]
956	956
957	957
	929	+
958	958	(((
959	959	(% style="color:#037691" %)**Downlink Command: 0x01**
960	960	)))
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972	972	)))
973	973	* (((
974	974	Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
	947	+
	948	+
	949	+
975	975	)))
976	976
977	977	== 4.2  Set Interrupt Mode ==
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1002	1002	Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
1003	1003	)))
1004	1004
	980	+
	981	+
1005	1005	== 4.3  Get Firmware Version Info ==
1006	1006
1007	1007	Feature: use downlink to get firmware version.
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1198	1198
1199	1199
1200	1200	(((
1201		-(((
1202	1202	In the PC, you need to set the serial baud rate to (% style="color:green" %)**9600**(%%) to access the serial console for LLDS12.
1203		-)))
1204	1204
1205		-(((
1206	1206	LLDS12 will output system info once power on as below:
1207	1207	)))
1208		-)))
1209	1209
1210	1210
1211	1211	[[image:1654593712276-618.png]]
1212	1212
1213		-Valid AT Command please check [[Configure Device>>||anchor="H4.A0ConfigureLLDS12viaATCommandorLoRaWANDownlink"]].
	1186	+Valid AT Command please check [[Configure Device>>||anchor="H4.A0ConfigureLSPH01viaATCommandorLoRaWANDownlink"]].
1214	1214
1215	1215
1216	1216	= 7.  FAQ =
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1217	1217
1218	1218	== 7.1  How to change the LoRa Frequency Bands/Region ==
1219	1219
1220		-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"]].
1221	1221	When downloading the images, choose the required image file for download. ​
1222	1222
1223	1223
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1226	1226	== 8.1  AT Commands input doesn’t work ==
1227	1227
1228	1228
1229		-(((
1230	1230	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.
1231		-)))
1232	1232
1233	1233
1234	1234	== 8.2  Significant error between the output distant value of LiDAR and actual distance ==
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1273	1273	* (% style="color:red" %)**IN865**(%%):  LoRaWAN IN865 band
1274	1274	* (% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
1275	1275
1276		-
1277		-
1278	1278	= 10. ​ Packing Info =
1279	1279
1280	1280
...	...	@@ -1289,8 +1289,6 @@
1289	1289	* Package Size / pcs : cm
1290	1290	* Weight / pcs : g
1291	1291
1292		-
1293		-
1294	1294	= 11.  ​Support =
1295	1295
1296	1296	* 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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