Summary

• Page properties (1 modified, 0 added, 0 removed)

Details

Page properties

Content

...	...	@@ -20,51 +20,24 @@
20	20
21	21
22	22	(((
23		-(((
24	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.
25		-)))
26	26
27		-(((
28		-
29		-)))
30	30
31		-(((
32	32	It detects the distance** (% style="color:#4472c4" %) between the measured object and the sensor(%%)**, and uploads the value via wireless to LoRaWAN IoT Server.
33		-)))
34	34
35		-(((
36		-
37		-)))
38	38
39		-(((
40	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.
41		-)))
42	42
43		-(((
44		-
45		-)))
46	46
47		-(((
48	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*.
49		-)))
50	50
51		-(((
52		-
53		-)))
54	54
55		-(((
56	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.
57		-)))
58	58
59		-(((
60		-
61		-)))
62	62
63		-(((
64	64	(% style="color:#4472c4" %) * (%%)Actually lifetime depends on network coverage and uplink interval and other factors.
65	65	)))
66	66	)))
67		-)))
68	68
69	69
70	70	[[image:1654847051249-359.png]]
...	...	@@ -92,12 +92,12 @@
92	92
93	93	[[image:image-20220610154839-1.png]]
94	94
95		-(((
96		-**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)**
97		-)))
	68	+**Remarks: (1) a. When the ambient temperature is 0-39 ℃, the maximum humidity is 90% (non-condensing);**
98	98
	70	+**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)**
99	99
100	100
	73	+
101	101	=== 1.3.2  Effective measurement range Reference beam pattern ===
102	102
103	103	**(1) The tested object is a white cylindrical tube made of PVC, with a height of 100cm and a diameter of 7.5cm.**
...	...	@@ -108,9 +108,7 @@
108	108
109	109
110	110
111		-(((
112	112	**(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.**
113		-)))
114	114
115	115
116	116	[[image:1654852175653-550.png]](% style="display:none" %) ** **
...	...	@@ -176,17 +176,11 @@
176	176	[[image:image-20220607170145-1.jpeg]]
177	177
178	178
179		-(((
180	180	For OTAA registration, we need to set **APP EUI/ APP KEY/ DEV EUI**. Some server might no need to set APP EUI.
181		-)))
182	182
183		-(((
184	184	Enter these keys in the LoRaWAN Server portal. Below is TTN V3 screen shot:
185		-)))
186	186
187		-(((
188	188	**Add APP EUI in the application**
189		-)))
190	190
191	191	[[image:image-20220610161353-4.png]]
192	192
...	...	@@ -229,15 +229,11 @@
229	229	== 2.3  ​Uplink Payload ==
230	230
231	231	(((
232		-(((
233	233	LDDS75 will uplink payload via LoRaWAN with below payload format:
234		-)))
235	235
236		-(((
237	237	Uplink payload includes in total 4 bytes.
238	238	Payload for firmware version v1.1.4. . Before v1.1.3, there is on two fields: BAT and Distance
239	239	)))
240		-)))
241	241
242	242	(((
243	243
...	...	@@ -272,13 +272,9 @@
272	272
273	273	=== 2.3.2  Distance ===
274	274
275		-(((
276	276	Get the distance. Flat object range 280mm - 7500mm.
277		-)))
278	278
279		-(((
280	280	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.**
281		-)))
282	282
283	283
284	284	* If the sensor value is 0x0000, it means system doesn’t detect ultrasonic sensor.
...	...	@@ -314,13 +314,9 @@
314	314
315	315	=== 2.3.5  Sensor Flag ===
316	316
317		-(((
318	318	0x01: Detect Ultrasonic Sensor
319		-)))
320	320
321		-(((
322	322	0x00: No Ultrasonic Sensor
323		-)))
324	324
325	325
326	326
...	...	@@ -859,6 +859,8 @@
859	859	* Solid ON for 5 seconds once device successful Join the network.
860	860	* Blink once when device transmit a packet.
861	861
	815	+
	816	+
862	862	== 2.8  ​Firmware Change Log ==
863	863
864	864
...	...	@@ -1061,6 +1061,9 @@
1061	1061	* Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
1062	1062	* Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
1063	1063
	1019	+
	1020	+
	1021	+
1064	1064	= 4.  FAQ =
1065	1065
1066	1066	== 4.1  What is the frequency plan for LDDS75? ==