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1		-LDDS75 - LoRaWAN Distance Detection Sensor User Manual
	1	+LDDS45 - LoRaWAN Distance Detection Sensor User Manual

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1	1	(% style="text-align:center" %)
2		-[[image:1654846127817-788.png]]
	2	+[[image:1654912614655-664.png||height="530" width="628"]]
3	3
4	4	**Contents:**
5	5
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21	21
22	22	(((
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24		-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.
	24	+The Dragino LDDS45 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 LDDS45 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.
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40		-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.
	40	+The LoRa wireless technology used in LDDS45 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.
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48		-LDDS75 is powered by (% style="color:#4472c4" %)** 4000mA or 8500mAh Li-SOCI2 battery**(%%); It is designed for long term use up to 10 years*.
	48	+LDDS45 is powered by (% style="color:#4472c4" %)** 8500mAh Li-SOCI2 battery**(%%); It is designed for long term use up to 10 years*.
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56		-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.
	56	+Each LDDS45 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.
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64	64	(% style="color:#4472c4" %) * (%%)Actually lifetime depends on network coverage and uplink interval and other factors.
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	66	+
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	71	+[[image:1654912858581-740.png]]
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70		-[[image:1654847051249-359.png]]
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74	74	== ​1.2  Features ==
75	75
76	76	* LoRaWAN 1.0.3 Class A
77		-* Ultra low power consumption
	79	+* Ultra-low power consumption
78	78	* Distance Detection by Ultrasonic technology
79		-* Flat object range 280mm - 7500mm
	81	+* Flat object range 30mm - 4500mm
80	80	* Accuracy: ±(1cm+S*0.3%) (S: Distance)
	83	+* Measure Angle: 60°
81	81	* Cable Length : 25cm
82	82	* Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865
83	83	* AT Commands to change parameters
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84	84	* Uplink on periodically
85	85	* Downlink to change configure
86	86	* IP66 Waterproof Enclosure
87		-* 4000mAh or 8500mAh Battery for long term use
	90	+* 8500mAh Battery for long term use
88	88
89	89
90	90
91		-
92	92	== 1.3  Specification ==
93	93
94	94	=== 1.3.1  Rated environmental conditions ===
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95	95
96	96	[[image:image-20220610154839-1.png]]
97	97
98		-**Remarks: (1) a. When the ambient temperature is 0-39 ℃, the maximum humidity is 90% (non-condensing);**
	100	+(((
	101	+**Remarks: (1) a. When the ambient temperature is 0-39 ℃, the maximum humidity is 90% (non-condensing);  b. When the ambient temperature is 40-50 ℃, the highest humidity is the highest humidity in the natural world at the current temperature (no condensation)**
	102	+)))
99	99
100		-**b. When the ambient temperature is 40-50 ℃, the highest humidity is the highest humidity in the natural world at the current temperature (no condensation)**
101	101
102	102
103		-
104	104	=== 1.3.2  Effective measurement range Reference beam pattern ===
105	105
106	106	**(1) The tested object is a white cylindrical tube made of PVC, with a height of 100cm and a diameter of 7.5cm.**
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	116	+(((
114	114	**(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.**
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116	116
117	117	[[image:1654852175653-550.png]](% style="display:none" %) ** **
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130	130	* Sewer
131	131	* Bottom water level monitoring
132	132
	137	+
	138	+
133	133	== 1.6  Pin mapping and power on ==
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135	135
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176	176	[[image:image-20220607170145-1.jpeg]]
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	185	+(((
179	179	For OTAA registration, we need to set **APP EUI/ APP KEY/ DEV EUI**. Some server might no need to set APP EUI.
	187	+)))
180	180
	189	+(((
181	181	Enter these keys in the LoRaWAN Server portal. Below is TTN V3 screen shot:
	191	+)))
182	182
	193	+(((
183	183	**Add APP EUI in the application**
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184	184
185	185	[[image:image-20220610161353-4.png]]
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223	223	== 2.3  ​Uplink Payload ==
224	224
225	225	(((
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226	226	LDDS75 will uplink payload via LoRaWAN with below payload format:
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227	227
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228	228	Uplink payload includes in total 4 bytes.
229	229	Payload for firmware version v1.1.4. . Before v1.1.3, there is on two fields: BAT and Distance
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262	262
263	263	=== 2.3.2  Distance ===
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	281	+(((
265	265	Get the distance. Flat object range 280mm - 7500mm.
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267	267	For example, if the data you get from the register is 0x0B 0x05, the distance between the sensor and the measured object is(% style="color:#4472c4" %)** 0B05(H) = 2821 (D) = 2821 mm.**
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270	270	* If the sensor value is 0x0000, it means system doesn’t detect ultrasonic sensor.
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271	271	* 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.
272	272
273	273
	294	+
274	274	=== 2.3.3  Interrupt Pin ===
275	275
276	276	This data field shows if this packet is generated by interrupt or not. [[Click here>>||anchor="H3.3A0SetInterruptMode"]] for the hardware and software set up.
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299	299
300	300	=== 2.3.5  Sensor Flag ===
301	301
	323	+(((
302	302	0x01: Detect Ultrasonic Sensor
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	327	+(((
304	304	0x00: No Ultrasonic Sensor
	329	+)))
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315	315	The payload decoder function for TTN V3 is here:
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	342	+(((
317	317	LDDS75 TTN V3 Payload Decoder: [[http:~~/~~/www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LDDS75/Payload_Decoder/>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LSE01/Payload_Decoder/]]
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841	841	* Blink once when device transmit a packet.
842	842
843	843
	871	+
844	844	== 2.8  ​Firmware Change Log ==
845	845
846	846
	875	+(((
847	847	**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/]]
	877	+)))
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	879	+(((
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850	850	**Firmware Upgrade Method: **[[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
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991	991	[[image:image-20220610172924-5.png]]
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994	994	In the PC, you need to set the serial baud rate to (% style="color:green" %)**9600**(%%) to access the serial console for LDDS75. LDDS75 will output system info once power on as below:
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995	995
996	996
997	997	[[image:image-20220610172924-6.png||height="601" width="860"]]
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1016	1016	Format: Command Code (0x01) followed by 3 bytes time value.
1017	1017
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1018	1018	If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
	1057	+)))
1019	1019
1020	1020	* Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
1021	1021	* Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
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	1062	+)))
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1024	1024
1025		-
1026		-)))
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	1066	+
	1067	+
1028	1028	== 3.3  Set Interrupt Mode ==
1029	1029
1030	1030	Feature, Set Interrupt mode for GPIO_EXIT.
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1038	1038
1039	1039	Format: Command Code (0x06) followed by 3 bytes.
1040	1040
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1041	1041	This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.
	1083	+)))
1042	1042
1043	1043	* Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
1044	1044	* Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger

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