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73	73
74	74	=== 1.3.2  Effective measurement range Reference beam pattern ===
75	75
76		-**(1) The tested object is a white cylindrical tube made of PVC, with a height of 100cm and a diameter of 7.5cm.**[[image:image-20220610155021-2.png||height="440" width="1189"]]
	76	+**(1) The tested object is a white cylindrical tube made of PVC, with a height of 100cm and a diameter of 7.5cm.**
77	77
78	78
79	79
80		-**(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.[[image:image-20220610155021-3.png||height="437" width="1192"]]
	80	+[[image:1654852253176-749.png]]
81	81
82		-(% style="display:none" %) (%%)
83	83
	83	+**(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.**
84	84
85	85
	86	+[[image:1654852175653-550.png]](% style="display:none" %) ** **
	87	+
	88	+
	89	+
86	86	== 1.5 ​ Applications ==
87	87
88	88	* Horizontal distance measurement
...	...	@@ -237,6 +237,8 @@
237	237	* If the sensor value is 0x0000, it means system doesn’t detect ultrasonic sensor.
238	238	* If the sensor value lower than 0x0118 (280mm), the sensor value will be invalid. Since v1.1.4, all value lower than 280mm will be set to 0x0014(20mm) which means the value is invalid.
239	239
	244	+
	245	+
240	240	=== 2.3.3  Interrupt Pin ===
241	241
242	242	This data field shows if this packet is generated by interrupt or not. [[Click here>>||anchor="H4.2A0SetInterruptMode"]] for the hardware and software set up.
...	...	@@ -248,6 +248,7 @@
248	248	0x01: Interrupt Uplink Packet.
249	249
250	250
	257	+
251	251	=== 2.3.4  DS18B20 Temperature sensor ===
252	252
253	253	This is optional, user can connect external DS18B20 sensor to the +3.3v, 1-wire and GND pin . and this field will report temperature.
...	...	@@ -531,7 +531,6 @@
531	531
532	532
533	533
534		-
535	535	=== 2.6.4  AU915-928(AU915) ===
536	536
537	537	(((
...	...	@@ -688,7 +688,6 @@
688	688
689	689
690	690
691		-
692	692	=== 2.6.6  KR920-923 (KR920) ===
693	693
694	694	(((
...	...	@@ -761,7 +761,6 @@
761	761
762	762
763	763
764		-
765	765	=== 2.6.7  IN865-867 (IN865) ===
766	766
767	767	(((
...	...	@@ -798,18 +798,22 @@
798	798
799	799
800	800
801		-
802	802	== 2.7  LED Indicator ==
803	803
804		-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.
805	805
806		-* 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.
807	807	* Blink once when device transmit a packet.
808	808
	815	+
	816	+
809	809	== 2.8  ​Firmware Change Log ==
810	810
811	811
812		-**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/]]
813	813
814	814
815	815	**Firmware Upgrade Method: **[[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
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816	816
817	817
818	818
819		-= 3.  LiDAR ToF Measurement =
	827	+== 2.9  Mechanical ==
820	820
821		-== 3.1 Principle of Distance Measurement ==
822	822
823		-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]]
824	824
825		-[[image:1654831757579-263.png]]
	832	+[[image:image-20220610172003-2.png]]
826	826
827	827
	835	+== 2.10  Battery Analysis  ==
828	828
829		-== 3.2 Distance Measurement Characteristics ==
	837	+=== 2.10.1  Battery Type ===
830	830
831		-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.
832	832
833		-[[image:1654831774373-275.png]]
834	834
	842	+The battery related documents as below:
835	835
836		-(((
837		-(% 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]],
838	838	)))
839		-
840		-(((
841		-(% 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]],
842	842	)))
843		-
844		-(((
845		-(% 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]]
846	846	)))
847	847
	854	+ [[image:image-20220610172400-3.png]]
848	848
849		-(((
850		-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:
851		-)))
852	852
853	853
854		-[[image:1654831797521-720.png]]
	858	+=== 2.10.2  Replace the battery ===
855	855
	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	+)))
856	856
857	857	(((
858		-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	+
859	859	)))
860	860
861		-[[image:1654831810009-716.png]]
862		-
863		-
864	864	(((
865		-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)
866	866	)))
867	867
868	868
869	869
870		-== 3.3 Notice of usage: ==
	874	+= 3.  Configure LLDS12 via AT Command or LoRaWAN Downlink =
871	871
872		-Possible invalid /wrong reading for LiDAR ToF tech:
873		-
874		-* Measure high reflectivity object such as: Mirror, Smooth ceramic tile, static milk surface, will have possible wrong readings.
875		-* While there is transparent object such as glass, water drop between the measured object and the LiDAR sensor, the reading might wrong.
876		-* The LiDAR probe is cover by dirty things; the reading might be wrong. In this case, need to clean the probe.
877		-* The sensor window is made by Acrylic. Don’t touch it with alcohol material. This will destroy the sensor window.
878		-
879		-= 4.  Configure LLDS12 via AT Command or LoRaWAN Downlink =
880		-
881	881	(((
882	882	(((
883	883	Use can configure LLDS12 via AT Command or LoRaWAN Downlink.

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