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

...	...	@@ -766,7 +766,6 @@
766	766
767	767
768	768
769		-
770	770	=== 2.6.7  IN865-867 (IN865) ===
771	771
772	772	(((
...	...	@@ -803,18 +803,22 @@
803	803
804	804
805	805
806		-
807	807	== 2.7  LED Indicator ==
808	808
809		-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.
810	810
811		-* 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.
812	812	* Blink once when device transmit a packet.
813	813
	815	+
	816	+
814	814	== 2.8  ​Firmware Change Log ==
815	815
816	816
817		-**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/]]
818	818
819	819
820	820	**Firmware Upgrade Method: **[[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
...	...	@@ -821,68 +821,55 @@
821	821
822	822
823	823
824		-= 3.  LiDAR ToF Measurement =
	827	+== 2.9  Mechanical ==
825	825
826		-== 3.1 Principle of Distance Measurement ==
827	827
828		-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]]
829	829
830		-[[image:1654831757579-263.png]]
	832	+[[image:image-20220610172003-2.png]]
831	831
832	832
	835	+== 2.10  Battery Analysis  ==
833	833
834		-== 3.2 Distance Measurement Characteristics ==
	837	+=== 2.10.1  Battery Type ===
835	835
836		-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.
837	837
838		-[[image:1654831774373-275.png]]
839	839
	842	+The battery related documents as below:
840	840
841		-(((
842		-(% 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]],
843	843	)))
844		-
845		-(((
846		-(% 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]],
847	847	)))
848		-
849		-(((
850		-(% 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]]
851	851	)))
852	852
	854	+ [[image:image-20220610172400-3.png]]
853	853
854		-(((
855		-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:
856		-)))
857	857
858	858
859		-[[image:1654831797521-720.png]]
	858	+=== 2.10.2  Replace the battery ===
860	860
	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	+)))
861	861
862	862	(((
863		-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	+
864	864	)))
865	865
866		-[[image:1654831810009-716.png]]
867		-
868		-
869	869	(((
870		-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)
871	871	)))
872	872
873	873
874	874
875		-== 3.3 Notice of usage: ==
	874	+= 3.  Configure LLDS12 via AT Command or LoRaWAN Downlink =
876	876
877		-Possible invalid /wrong reading for LiDAR ToF tech:
878		-
879		-* Measure high reflectivity object such as: Mirror, Smooth ceramic tile, static milk surface, will have possible wrong readings.
880		-* While there is transparent object such as glass, water drop between the measured object and the LiDAR sensor, the reading might wrong.
881		-* The LiDAR probe is cover by dirty things; the reading might be wrong. In this case, need to clean the probe.
882		-* The sensor window is made by Acrylic. Don’t touch it with alcohol material. This will destroy the sensor window.
883		-
884		-= 4.  Configure LLDS12 via AT Command or LoRaWAN Downlink =
885		-
886	886	(((
887	887	(((
888	888	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