Summary

• Page properties (1 modified, 0 added, 0 removed)
• Attachments (0 modified, 3 added, 0 removed)
  • image-20220610172003-1.png
  • image-20220610172003-2.png
  • image-20220610172400-3.png

Details

Page properties

Content

...	...	@@ -58,6 +58,7 @@
58	58	* 4000mAh or 8500mAh Battery for long term use
59	59
60	60
	61	+
61	61	== 1.3  Specification ==
62	62
63	63	=== 1.3.1  Rated environmental conditions ===
...	...	@@ -82,13 +82,10 @@
82	82	**(2)** **The object to be tested is a "corrugated cardboard box" perpendicular to the central axis of 0 °, and the length * width is 60cm * 50cm.**
83	83
84	84
85		-[[image:1654852175653-550.png]]
	86	+[[image:1654852175653-550.png]](% style="display:none" %) ** **
86	86
87	87
88		-(% style="display:none" %) ** **
89	89
90		-
91		-
92	92	== 1.5 ​ Applications ==
93	93
94	94	* Horizontal distance measurement
...	...	@@ -102,6 +102,7 @@
102	102	* Bottom water level monitoring
103	103
104	104
	103	+
105	105	== 1.6  Pin mapping and power on ==
106	106
107	107
...	...	@@ -539,7 +539,6 @@
539	539
540	540
541	541
542		-
543	543	=== 2.6.4  AU915-928(AU915) ===
544	544
545	545	(((
...	...	@@ -696,7 +696,6 @@
696	696
697	697
698	698
699		-
700	700	=== 2.6.6  KR920-923 (KR920) ===
701	701
702	702	(((
...	...	@@ -769,7 +769,6 @@
769	769
770	770
771	771
772		-
773	773	=== 2.6.7  IN865-867 (IN865) ===
774	774
775	775	(((
...	...	@@ -806,18 +806,22 @@
806	806
807	807
808	808
809		-
810	810	== 2.7  LED Indicator ==
811	811
812		-The LLDS12 has an internal LED which is to show the status of different state.
	807	+The LDDS75 has an internal LED which is to show the status of different state.
813	813
814		-* The sensor is detected when the device is turned on, and it will flash 4 times quickly when it is detected.
	809	+
	810	+* Blink once when device power on.
	811	+* The device detects the sensor and flashes 5 times.
	812	+* Solid ON for 5 seconds once device successful Join the network.
815	815	* Blink once when device transmit a packet.
816	816
	815	+
	816	+
817	817	== 2.8  ​Firmware Change Log ==
818	818
819	819
820		-**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/]]
	820	+**Firmware download link: **[[http:~~/~~/www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LSE01/Firmware/>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LSE01/Firmware/]]
821	821
822	822
823	823	**Firmware Upgrade Method: **[[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
...	...	@@ -824,68 +824,55 @@
824	824
825	825
826	826
827		-= 3.  LiDAR ToF Measurement =
	827	+== 2.9  Mechanical ==
828	828
829		-== 3.1 Principle of Distance Measurement ==
830	830
831		-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.
	830	+[[image:image-20220610172003-1.png]]
832	832
833		-[[image:1654831757579-263.png]]
	832	+[[image:image-20220610172003-2.png]]
834	834
835	835
	835	+== 2.10  Battery Analysis  ==
836	836
837		-== 3.2 Distance Measurement Characteristics ==
	837	+=== 2.10.1  Battery Type ===
838	838
839		-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:
	839	+The LDDS75 battery is a combination of a 4000mAh or 8500mAh Li/SOCI2 Battery and a Super Capacitor. The battery is non-rechargeable battery type with a low discharge rate (<2% per year). This type of battery is commonly used in IoT devices such as water meter.
840	840
841		-[[image:1654831774373-275.png]]
842	842
	842	+The battery related documents as below:
843	843
844		-(((
845		-(% style="color:blue" %)**① **(%%)Represents the detection blind zone of The LiDAR probe, 0-10cm, within which the output data is unreliable.
	844	+* (((
	845	+[[ Battery Dimension>>url:http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/&file=LSN50-Battery-Dimension.pdf]],
846	846	)))
847		-
848		-(((
849		-(% style="color:blue" %)**② **(%%)Represents the operating range of The LiDAR probe detecting black target with 10% reflectivity, 0.1-5m.
	847	+* (((
	848	+[[Lithium-Thionyl Chloride Battery  datasheet>>url:https://www.dragino.com/downloads/downloads/datasheet/Battery/ER26500/ER26500_Datasheet-EN.pdf]],
850	850	)))
851		-
852		-(((
853		-(% style="color:blue" %)**③ **(%%)Represents the operating range of The LiDAR probe detecting white target with 90% reflectivity, 0.1-12m.
	850	+* (((
	851	+[[Lithium-ion Battery-Capacitor datasheet>>url:http://www.dragino.com/downloads/downloads/datasheet/Battery/SPC_1520_datasheet.jpg]], [[Tech Spec>>url:http://www.dragino.com/downloads/downloads/datasheet/Battery/SPC1520%20Technical%20Specification20171123.pdf]]
854	854	)))
855	855
	854	+ [[image:image-20220610172400-3.png]]
856	856
857		-(((
858		-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:
859		-)))
860	860
861	861
862		-[[image:1654831797521-720.png]]
	858	+=== 2.10.2  Replace the battery ===
863	863
	860	+(((
	861	+You can change the battery in the LDDS75.The type of battery is not limited as long as the output is between 3v to 3.6v. On the main board, there is a diode (D1) between the battery and the main circuit. If you need to use a battery with less than 3.3v, please remove the D1 and shortcut the two pads of it so there won’t be voltage drop between battery and main board.
	862	+)))
864	864
865	865	(((
866		-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.
	865	+
867	867	)))
868	868
869		-[[image:1654831810009-716.png]]
870		-
871		-
872	872	(((
873		-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.
	869	+The default battery pack of LDDS75 includes a ER18505 plus super capacitor. If user can’t find this pack locally, they can find ER18505 or equivalence, which will also work in most case. The SPC can enlarge the battery life for high frequency use (update period below 5 minutes)
874	874	)))
875	875
876	876
877	877
878		-== 3.3 Notice of usage: ==
	874	+= 3.  Configure LLDS12 via AT Command or LoRaWAN Downlink =
879	879
880		-Possible invalid /wrong reading for LiDAR ToF tech:
881		-
882		-* Measure high reflectivity object such as: Mirror, Smooth ceramic tile, static milk surface, will have possible wrong readings.
883		-* While there is transparent object such as glass, water drop between the measured object and the LiDAR sensor, the reading might wrong.
884		-* The LiDAR probe is cover by dirty things; the reading might be wrong. In this case, need to clean the probe.
885		-* The sensor window is made by Acrylic. Don’t touch it with alcohol material. This will destroy the sensor window.
886		-
887		-= 4.  Configure LLDS12 via AT Command or LoRaWAN Downlink =
888		-
889	889	(((
890	890	(((
891	891	Use can configure LLDS12 via AT Command or LoRaWAN Downlink.

image-20220610172003-1.png

Author

...	...	@@ -1,0 +1,1 @@
	1	+XWiki.Xiaoling

Size

...	...	@@ -1,0 +1,1 @@
	1	+5.9 KB

Content

image-20220610172003-2.png

Author

...	...	@@ -1,0 +1,1 @@
	1	+XWiki.Xiaoling

Size

...	...	@@ -1,0 +1,1 @@
	1	+18.6 KB

Content

image-20220610172400-3.png

Author

...	...	@@ -1,0 +1,1 @@
	1	+XWiki.Xiaoling

Size

...	...	@@ -1,0 +1,1 @@
	1	+370.3 KB

Content